7 Biggest Mistakes That HVAC Contractors Make

“To err is human,” is a total summation of the human condition. We all make mistakes in our lives and we try and make it right. Sometimes when we hire professionals we put our trust and faith in their ability to do their job correctly. However, to err is something we have to think about when hiring anyone to do any job.

There are some mistakes HVAC contractors do while on the job and may seriously affect your heating and air conditioning system. Listed below are some examples of how HVAC contractors and their technicians may make mistakes:

Carbon Monoxide

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air. In small amounts it is not fatal to humans, but in large quantities it can be a silent killer. Every home should have a CO detector, especially if the house is using a furnace or natural gas to heat and cool the house. When HVAC technicians get a call to check for CO in homes, they usually go to check the alarm, and then check for cracks in the furnace. This however, isn’t everything that needs to be checked. The contractors need to inform their technicians of backdraft and flue gases as these can contribute to CO poisoning as well.

Air Flow

Central heat and air conditioning rely on a system of tubes that run through the house that the heated or cooled air flows through. These tubes or ducts are known as ductwork. Ductwork is key to the central heat and air system because without them there would be no air flow throughout the home. One thing that HVAC contractors get wrong is when changing out a system, they have to change out the ductwork. This just helps to make sure that the ductwork is the right size, and that it work efficiently with little to no loss of air flow.


HAC refers to HVAC contractors and technicians who leave the V out of HVAC. Ventilation is vital to your home because all homes to be able to breath. Air quality in the home is very important, and some HVAC companies forget about ventilation systems.

Rule of Thumb

There are HVAC contractors who have been in the HVAC business for years. These contractors have the ability to say that they have been providing HVAC services for 50+ years; that doesn’t mean that they have been providing quality service. There are more stringent codes that home building requires now to meet energy efficient standards. 50 years ago HVAC contractors employed the “rule of thumb” when determining what size unit your home would require. This rule however is outdated because there are several things that should be taken into consideration before determining the unit size. You don’t want too big of a unit or too small because this will lead to problems further down the road and you will have to put in a whole new system eventually.

Low Bidding

Everybody wants the product that is going to be the lowest. Cheaper, means that there is more money to spend on other things. HVAC contractors know that if they low bid, they will more than likely get the job over the other bidders. This in turn, is not the way to go. Low bidding leads to cutting corners, and not poor quality of work. Cheaper is not always the way to go, especially when it comes to the comfort of your home.

Bottom Line

There is a need to research who you are employing to install and maintain all your HVAC needs and concerns. Experience doesn’t always mean qualified. A quality HVAC contractor will make sure that every facet of their job is done correctly and efficiently. They train their technicians correctly, and that they are certified. These contractors will let you know what is going on in your home that goes beyond the HVAC scope, because they care about their customers, and want to make sure that your comfort quality is always maintained.

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