This information is for Heating Ventilation and Air Conditioning contractors, but a lot of it applies to other types of contractors.
For detailed information see this video How to find a good HVAC contractor from electrify now and San Diego Learn.
You may want a printed copy of this list when talking to contractors. Questions in red apply to other types of contractors.
Questions to ask a Licensed HVAC contractor
Will you do an assessment of the insulation and weatherization?
If they don’t look in the attic and assess the insulation of your home, don’t hire them
Will you do a load calculation to determine the size system I need?
If they can’t show you a print-out of the calculation, they probably didn’t do one. and you should not work with that contractor because they will not know how to properly size your equipment.
Are the ducts operating effectively in all the rooms?
Make sure they inspect the ducts and ask them what they found. If they do not inspect the ducts,
do not work with that contractor.
Where is the best place to locate the external compressor unit?
You typically do not want the unit outside of bedrooms or living areas if possible.
How noisy is the external compressor unit?
Ask to see the loudness specs and compare them to other equipment to make sure you get a unit that is not too loud if that is a concern for you.
What is the efficiency of the system?
To compare systems, you will need to know the SEER rating for cooling and HSPF ratings for
heating. The higher the numbers the more efficient the equipment is – that translates to better
heating and cooling and lower operating costs.
Will this equipment qualify for IRA tax incentives?
Equipment in Northern US must have a SEER rating of 15.2 or greater and HSPF rating of 8.1 or greater.
Will you help to find all the incentives available?
Ask about incentives before any work is done.
If they present multiple options – how do annual operating costs and up-front costs compare?
A higher efficiency system will cost more up front but should cost significantly less to operate.
Is there a way to install the equipment without upgrading my electrical panel?
Many homes can be electrified with a 100Amp panel. If they say yes, ask if they are familiar with the Watt Diet or other approaches.
I am thinking about adding a (EV Charger, Induction Range, HP Water Heater) – could I save some money by doing more electrical work all at once?
The fewer times you have an electrician, or any contractor come to your home the lower the cost.