Do I need an oil to gas conversion to be more efficient

The idea is that an oil to gas conversion will save you money in the operation of your system. This is true as gas is about 30% less than oil per BTU of heat. Therefore you can lower your bills just by changing the source of fuel. However, you can save even more just by looking at your existing system. By optimizing, upgrading, and updating your heating system with modern techniques and technologies you can save over 50% without converting to gas. These techniques should also be implemented if you choose to convert to gas anyway to see a savings of over 70%.

The boiler is just one part of a very intricate system. All parts need to be addressed to get the most out of the system. 

Balancing steam and hot water systems, installation of outdoor and/or indoor reset controllers, variable frequency drive pumps, insulating of all piping, correcting sequence of operation, are just a few measures to name, making huge impact on efficiency and comfort of the heating systems. 

West 22nd Street - Oil to gas conversion - Viessmann

Absolute Mechanical has finally completed it's West 22nd street project. The boiler room is on the bottom floor of a duplex in a 4 unit building. The original boiler and oil tank took up an entire room of a Manhattan apartment and emitted an extreme amount of noise and heat! We installed a brand new mechanical room with a new Viessmann boiler and indirect hot water heater for this unit. It freed up an entire room for the apartment as well as a gorgeous installation for them to admire. 

West 90th Street - Steam Boiler - Oil to Gas Conversion

This is a steam boiler installation with Thermostatic Radiator Valves and an internet enabled thermostat which allows the owner to view the temperature in the building from anywhere in the world. 

The first picture is the original boiler, all the pictures after are the after and during the installation.

The completion of 43rd Street - Viessmann

This video is from the first day of the boiler installation. Please note that when there is something done that will cause dust we close up the space entirely in plastic so no debris enters the living space. 

This was our first installation of the new Viessmann 222-F. This system is a great solution to the problems that arise from tankless combi boilers on the domestic hot water side. The Viessmann 222-F has a 25 gallon tank inside. While it is floor standing and larger than a wall hung Viessmann, it allows for a smaller footprint of the piping for the system. 

The completion of Avenue C - Viessmann Vitodens 200W

This was a very difficult project for us due to the installation of a new gas service from the street. These projects require a lot of back and forth between the utility company, the building department, and the contractor. Many requirements must be met before the gas line is provided which means much of the project is done in stages. Our video system was put in place in the middle of this project which took the better part of a year to complete.

Video 1 from March 31st shows the old boiler being removed. Each section was vacuumed and cleaned before it was taken apart to ensure that the dirt did not go all over the boiler room. All the equipment was covered in plastic to protect it. 

Each video is 30 -80 seconds long showing the day's work. Watch a heating system installation in only a few minutes!

 

 

Videos of Absolute's Installations

In this post we will highlight some videos from our installations. As we continue to update our new website with our completed and existing projects, these videos will be posted to their project's page. 

How many boilers can fit into one boiler room?

24 boilers in one boiler room!

24 boilers in one boiler room!

This picture was sent to me over the weekend by my friend from a boiler room he went into. The owner of this boiler room thought it would be wise to buy 24 boilers and 24 water heaters so the tenants could pay their own heat and hot water. That's right - 24 BOILERS and 24 WATER HEATERS! This person thought they were being smart because the tenants would pay their own heat and hot water.  What he didn't realize is that 24 boilers and 24 water heaters means 48 problems at a time!

I get this question all the time, "would it make sense to just install individual boilers and water heaters so they can pay their own heat and hot water " the answer is always, NO. Absolutely not. There are several reasons for that. One is, who maintains these units... that's a maintenance charge for each unit. The money you have saved in not paying their tiny gas bill (if the system is installed properly) is wasted in maintenance costs alone. Not to mention that it's the same as installing one unit but times 24! 

Aside from the terrible expense it is and future head ache, like for example, what if all 24 break at the same time, these units are not sized for individual apartments. They are sized for homes and multifamily buildings. That means that they are not only inefficient, they are short cycling and dying slowly. This increases the likelihood of them dying all together exponentially. If this person was to install ONE high efficiency unit he would be saving not only on the install, maintenance, and future repairs/installation but also on his bills. He could heat this entire building for what most people pay for their home heating bills and make money from his heating system! 

New Construction, what's wrong with you?

My friends often tell me that they are looking at a new construction building to buy a condo. They claim that if it's new it won't have any problems that older buildings have. It must be great! They never believe me when I say to stay away. I say this because we are called out very often to see new constructions that have been occupied for 5 years or even less with nothing but problems. 

We see hi-tech systems installed like regular systems, not properly set up, not completed in their installation. We see each apartment with their own boilers. The apartments are getting smaller and smaller while the boilers are getting bigger and bigger, with fewer piping. It's a shame to see such gorgeous buildings with such terrible heating systems. Builders and tenants alike don't realize how important a properly designed mechanical system is until they are faced with loud banging, cold winters, open windows, and law suits. 

The pictures above are a before and after in a new construction (little to no heat for 5 years). As you can see, the first picture has half the installation missing. In the second picture we have completed the original builders installation to provide heat to a 25 unit building. 

My heats not working, I need a plumber

Very often I hear "I need a plumber, my heating system isn't working properly" or "Why did my plumber not know how to install this boiler correctly". Well the answer is simple, if your heart hurt would you say "I need a general physician" or "I need a cardiologist"? Yes, both have the license to work on your body and treat you but only one has the specific expertise to work on your heart. Consider your home a body and everyone who works in it needs to specialize in the specific part of your home. It may be complicated but doing it right once will save you the trouble of fixing it over and over again. 

It is true that you need to be a licensed plumber to work on gas lines which means you need to be a licensed plumber to work on a boiler. However, you need to be a heating contractor to know your heating systems. There is a term, jack of all trades master of none. This is true for everyone, plumbers included. If you need your Air Conditioner worked on then you should contact an air conditioning company, if you need you plumbing done, ie toilets, sinks, waste lines, then contact a plumber. If you need your heating system done, contact a heating professional. 

a great place to get heating information and help is www.heatinghelp.com

Design Temperature

As temperatures drop to historical lows tenants and home owners are noticing drops in their indoor temperature as well. This is because heating systems are designed for 11F outdoor temperature. They are designed for 99% of the conditions so that they can be more efficient when necessary. If the system is oversized for the few days that the temperatures drop below 11F they will operate very poorly on all the days that are above 11F. 

This means that in very cold weather such as 9F the indoor temperature will drop a few degrees. Customers should seal and winterize all leaking windows, doors and especially fireplaces if not in use. This will help keep the heat in on those very very cold winter days. Once the temperatures creep back over 11 degrees the indoor temperature will return to normal.

The Triangle - Fast, Good, or Cheap

You can have something good, cheap, or fast but you can't have all three. Here Fast refers to the time required to deliver the product, Good is the quality of the final product, and Cheap refers to the total cost of designing and building the product. This triangle reflects the fact that the three properties of a project are interrelated, and it is not possible to optimize all three – one will always suffer. In other words you have three options:

  • Design something quickly and to a high standard, but then it will not be cheap.
  • Design something quickly and cheaply, but it will not be of high quality.
  • Design something with high quality and cheaply, but it will take a relatively long time.

When making your final decisions you have to consider these three options. Which one are you willing to sacrifice in your project. 

To TRV or not to TRV

Our installations come standard with thermostatic radiator valves. This is a must for our steam installations and an option for our hydronic installations. 

TRVs on Steam- TRVs allow the boiler to be sized to the houses needs versus the existing radiators
The reason that TRVs are mandatory on our steam installations is because it allows us to more accurately size the boiler to the needs of the home. In general when sizing a steam boiler you size the boiler to the radiators. The issue with this is that the radiators are existing. Who knows who installed them, what kind of windows did the house have at the time, what kind of insulation, what were the needs of each room. Or were the radiators just picked from whatever was available and installed. No one knows. This means that you could potentially be over sizing the boiler to an already over sized system. TRVs allow you to size the boiler to the house and they control how much steam goes into each radiator. They sense the temperature in the room and let out only the right amount of air to keep the room at a desired temperature. Therefore if a room has sun coming in, internal gains, or a party the radiator will only have some sections hot if heat is necessary at all. 

How does it impact my boiler? TRVs allow the boiler installed to be smaller. By installing a smaller boiler the home owner will save on their heating bills and in the case of an oil to gas conversion, on their chimney lining. 

TRVs on hydronic- Automatic Balancing
A hydronic boiler is already sized up to the house so TRVs do not affect its sizing. What they do affect is balancing issues. A properly balanced system is an extreme comfort. TRVs on hydronic allow for each radiator to control how much water flow it needs and therefore remove the need to balance manually. This also affects air removal. Our systems have air eliminators installed at the boiler. An improperly balanced system traps the air regardless of these air eliminators. 

While it is not required to install TRVs with our installations it is highly recommended. 

Zoning, Thermostats, and Control

Often I am asked by customers if we can install zones and thermostats on our high efficiency installations. When I begin to explain that we can not zone or install thermostats on high efficiency I am asked "how will i be able to control the system" and I answer "why do you want to control the system". There is no need to micromanage a high efficiency system, it is the perfect secretary... it knows exactly what you need and when you need it. However, if you feel that it's just too much letting go, you can install TRVs which control flow to each radiator individually and does not interfere with the boilers functions.

Why shouldn't you zone a high efficiency system? 
Because a high efficiency system has to be on 24/7 and modulate to follow the load. The load is the key. A typical one family house barely has 100,000 BTU heat loss on a cold day let alone the average heating season day. A typical 100,000 BTU boiler (just as an example) can modulate from 20,000 BTU to 100,000 BTU before it shuts off because it doesn't see a load. If you zone the system you break up this load even further. The boiler will not see a load because it's under it's lowest modulation point (in non specific terms). This destroys all the comfort and efficiency of this wonderful system. 

Why can't I have a thermostat?
Very simply, for a high efficiency system to be high efficient it must modulate and a thermostat prohibits it from modulating. To modulate means that the flame has to get higher and lower to keep the temperature at the right point to replace any lost heat from the building. If you install a thermostat you remove the boilers ability to modulate because you now control the boiler turning on and off. While this seems unfair to the feelings of the boiler since it knows best what it needs to do, it will also impact your comfort. These boilers do not have a high pick up rate like a standard efficiency boiler so it takes longer for the entire house to warm up vs a standard boiler. Each time the thermostat turns the system off it needs a significant amount of time to heat the building back up to a desired temperature. Aside from the fact that you are losing all your efficiency in that start up, you are also losing all your comfort because you are introducing temperature fluctuations which confuse your body. 

A really great article about renovations and lowest bidders

http://canadianrenovations.com/risks_hiring_low_bidder


This is a great article about the importance of not cutting corners in a renovation and the woes of going with the lowest bidder. Obviously we especially love the emphasis they put on the HVAC system. 

"HVAC – This is an area that you really need to have a professional design and installation. Poor design or the wrong size system will result in a wide range of temperatures in your home. Utility costs aren’t likely to come down. This is one more area that the low bidder can substitute a “no-name” unit to make money."

Enjoy the article below...

There are Typically 3 Types of Renovation Contractors that Provide the Lowest Bid:

  1. They Don’t have Enough Experience to Properly Bid Your Project
  2. They Know All the Shortcuts on Quality (and you won’t notice them until it is too late).
  3. They Use a Cost Plus Proposal Because it Gives them the Right to Increase the Your Price for Virtually Any Reason

Most homeowners only do a major renovation once in their life.

  • Inexperienced renovation contractors don’t know all the things that are needed to complete a quality project. They almost always underestimate the amount of labor needed to do each task. They are then forced to take shortcuts to “make it work”. This is never good. Often they will ask for more money and if your home is a wreck and you won’t have much choice.
  • Unscrupulous contractors know, that you don’t know how to find their shortcuts. They don’t plan on working for you again so they will take advantage of your inexperience. There shortcuts on quality won’t show up right away but they will eventually.
  • Probably the most surprising low bidder is the one that uses a Cost Plus Proposal to look like the best bid.
  • The Cost Plus Proposal gives the renovation contractor the right to increase the proposal price for virtually any reason. So they can bid low, get the job and then exercise their right and ask for more money.
  • Once the demolition is done your back will be against the wall. Your choice will be to fire them and find someone that is willing to take over your project or pay the “ransom” and be upset about it.

The information on this page is provided to help homeowners avoid hiring a contractor that will frustrate you with poor quality or leave you with a half-finished project.

Why Not Take the Low Bid?That is a fair question. Can’t you hold them to the price? Not very likely.

It is more likely that they will demand more money once they complete the demolition and all you have are studs. If you don’t give in they can walk off the job and disappear especially if you gave them a nice deposit.

If you signed a Cost Plus Proposal you won’t have any leverage because the shrewd contractor can come up with plenty of reasons why they need more money.

It can really be attractive to take the lowest bid on a home renovation project because the “savings” can look substantial. If the bid also fits your budget it can be even more attractive.

Before you sign any proposal consider this information carefully.
 

  1. Some contractors will simply throw out a low bid to hook you. They will then start negotiating. Ethical contractors provide their best price up front and will include all the details on materials and installation methods.
  2. Bids that are 10% or more below other bids can’t be the same job. A 10% profit is a solid profit on a quality job so if their bid is 10% or more below other bids it would mean they are working for free. No one works for free. Substituting lower quality materials and taking shortcuts on installation allow them to still make money at your expense.
  3. Kitchen cabinets can cost $10,000 or high end cabinets can be $50,000. Installation costs will be pretty close. One tactic the low bidder can use is to offer a “private label” cabinet with “all the features of the high end cabinet at a much lower cost”. What they won’t tell you is that they are making money because they are buying these inferior cabinets at a deep discount and charging you a premium price. They may look good for a while but they will start to fall apart. Check out the reputation and warranty of all material and appliance suppliers before you buy. At a minimum, if you can’t find them on line, don’t buy their cabinets.
  4. Low bidders save money because they aren’t insured or are under insured. They take the chance that “nothing bad will happen”. This means that you will be at risk if someone gets hurt on the job.
  5. If you do a Google search there will be some unbelievable stories about unethical contractors that offered a price that was “so good”.

More Opportunities for the Low Bidder to Take Advantage of YouThere are many more ways the low bidder can still make money at your expense. Don’t be fooled, if a bid looks too good to be real, it is.

Windows – Low bidders love bargain windows. They can look good but they won’t fit properly and your heating and cooling costs will go up not down. There is a huge difference between the $99 bargain window and a well-made window. Better windows are custom made for each opening. There is a process to properly install the windows whether they are replacement windows or complete window replacements. If the proper techniques and materials are not used there may be air leaks and water damage caused by the improper installation. Most bargain windows have limited warranties so if something goes wrong you will probably eat the cost to fix it. This is one place that the low bidder can make some easy money at your expense.

Sheetrock and Drywall – Nails pop and seams will begin to show up as soon as the weather changes and then it's too late. Low bidders may use cheap sheetrock from China and that can have some very serious health consequences for your family.

Kitchen Cabinets – As we pointed out above you can spend $10,000 or $50,000 on kitchen cabinets for the same project. Here are some of the typical problems with “knock-offs”: doors will warp or won’t fit flush, drawers fall apart, tracks and hinges come loose.

The biggest issue is in measuring. Shortcuts or inexperienced carpenters won’t take the right measurements. When the cabinets arrive they will need to “make them fit” and this takes time and will result in a mediocre installation. This is another area where the low bidder can make up profits with cheap “knock offs”.

Stone – This is another area where there is a wide range of pricing. Granite and Marble must be measured correctly to create the proper fit. You can’t recut a piece of granite or marble if the measurements are wrong. Bigger seams to make up for errors in measuring look awful. This can be a big investment that ends up looking mediocre.

Framing – Walls have to be plumb or they will cause endless problems with the drywall, moldings, casements and other trim work. The cabinets and trim work won’t be flush with wall or ceiling. The gaps will be almost impossible to fill and it will just look awful.

HVAC – This is an area that you really need to have a professional design and installation. Poor design or the wrong size system will result in a wide range of temperatures in your home. Utility costs aren’t likely to come down. This is one more area that the low bidder can substitute a “no-name” unit to make money.

Plumbing – Cheap plumbing components, especially the ones behind the walls can begin to leak and cause long term damage to floors, walls and ceilings. Leaks can create mold issues and mold is very expensive to remediate and can lead to insurability issues.

Roofing – Most homeowners won’t get up on a roof to inspect it. The low bidder will use this to their advantage. There are almost 30 inspection points that should be checked on each roof installation to ensure a quality installation. Improper or inappropriate installations will create problems with wind, snow and rain. This can create leaks that may result in damage to drywall, cabinets, carpet etc...

Painting – If the drywall is poorly installed it will be almost impossible for the painter to make it look right. The defects will show up in uneven seams, nail pops, uneven surfaces and more. This also means that additional time will be required to prep the walls to try to fix the other issues.

Take the time now to find the perfect company to work with. Committing to a renovation project can be a bit daunting and by doing your homework and completing your screening process BEFORE you sign a contract you’re ensuring that your dream project won’t become a nightmare.

New Consulting Services at Absolute!

Absolute Mechanical is now offering a service to design or consult on the design of your heating system. We can advise on how the system will work, is it being installed correctly, is it being designed correctly, what issues you may find and how to resolve them before you install the system and commit. 

This service is for contractors, customers, architects, engineers, and General contractors who want to make sure their customer or their home gets the best!

Please contact us for more information. 

Steam to Hydronic Conversion

Is it necessary to convert from steam to hydronic to achieve a desired result in your heating system? It depends on what result is desired. That depends on the goal really. 

Typical Goals:
1. Save on fuel bills
2. More comfort and control
3.  Quieter system
4. More modern system (nicer boiler, modern radiators, smaller risers)

While all these goals would be reached by converting to hydronic most of them can also be reached by upgrading to a proper steam system. All other than goal #4 which is a great reason to upgrade to hydronic and usually happens during a gut renovation anyway. 

To convert a steam system from oil to gas with a proper installation of the properly sized steam boiler, header, master vents, TRVs, and thermostat would run a potential client in the area of $20-30k. While convert the entire system to hydronic would only start at $60k. This is without taking into account the construction expenses of cutting and fixing the holes in the floors as well as removing the steam pipes. While a properly designed high efficiency hydronic system does provide more savings than a properly designed steam system the difference is minimal compared to the investment necessary. This is of course unless there is already a gut renovation happening. In that case it's a great time to upgrade. 

Another goal that was not mentioned is zoning. It is common knowledge that the ability to zone will provide exponential savings because there is less of a load on the boiler and it's not working when it doesn't need to work. This was true for standard efficiency systems but is detrimental to the efficiency of a high efficiency system. Therefore it wasn't listed as one of the typical goals. But it should be mentioned. 

Shortly I will provide case studies on our steam systems and hydronic systems. 
 

The importance of a properly designed steam system

As mentioned in the previous article and a constant theme Absolute Mechanical reiterates, it is possible to get great savings and comfort with steam. This is proven in the case study below. 

Property Type: 6 Unit + commercial
Property Size: 7,451 sq ft
Infiltration: Attached on both sides with an extension in the rear. 
Fuel: Gas
Boiler: SlantFin 
System: Steam system with hydronic portion for extension converted from oil to gas
Average Savings: approximately 70%

Fuel Bills Analysis:
Total Oil Bill for 2012 was $9,730 including gas for the building and hot water production. 
Total gas bill including gas for building and hot water production after installation:
10/22/2013 - 11/20/2013  - $343.00
11/20/2013 - 12/20/2013  - $609.00
12/20/2013 - 1/23/2014    - $831.11

We will keep tracking the savings for this installation.

These results were reached all the while with keep 72 degrees inside with no night set backs, no downtime, and now uncomfortable periods.