If your HVAC system is getting older and you are looking to upgrade your equipment, you may assume that a HVAC contractor that simply offers to replace your equipment would be the best option. Unfortunately, this is not necessarily the case as a contractor who offers to replace existing equipment without an inspection, or diagnostic testing may be doing you a disservice.
The Potential Issues:
Research conducted by utility companies and the government has found that most new HVAC systems are improperly installed, the wrong size or even attached to an existing duct system that is inadequate. This equates to approximately one third of energy wasted.
Many contractors within the industry are ignorant of these issues, as the true impact has only been understood over the last ten years. While advanced training is now readily available, there are relatively few contractors taking advantage of it. An even smaller percentage of contractors invest in the advanced diagnostic tools and instruments necessary to optimize an HVAC system. This includes equipment such as airflow capture hoods, infiltrometer blower doors, hygrometers or refrigerant charging scales needed to properly complete the job.
Some contractors are aware of these issues, but don’t pay the proper attention. Due to the profit markup on equipment, contractors stand to make the most on a per hour rate simply by removing the old system and connecting new equipment.
The Importance of Diagnosis:
Taking the time to diagnose and fix any pre-existing issues with ductwork or insulation may not be a priority for fly by night contractors who want to rush on to the next job, but this doesn’t mean that it isn’t vital. If your contractor is not willing to spend this time, then they are also unlikely to take the time and care in installing your new system according to manufacturer and industry guidelines.
Many contractors will attempt to minimize the process of diagnostic testing and proper sizing calculations. You will find that they say things like they don’t need to perform the tests and measurements as they have worked on hundreds of houses like yours. This simply is not the case as each house has its own unique characteristics and different issues.
The best contractor is interested in offering you great service rather than just selling you some equipment. They aim to build long term relationships and establish their business based on happy clients, rather than making a fast buck. The contractor takes pride in solving client problems and installing systems that will work properly, even if it means selling equipment to fewer people.
Conscientious, up to date contractors are a minority within the industry, but look and you will find them. It will require taking the time to research your options, as you may need to speak to a dozen contractors before finding the one with the ability and willingness to follow the diagnostic process recommended by the EPA, Department of Energy and consumer protection groups.
Don’t be misled by contractors promising a quick fix, by simply swapping out your equipment without running the proper diagnosis to ensure it is the right option for your home.