Heating and Cooling Frequently Asked Questions – FAQs

We want to help you understand your heating and cooling systems and to provide answers to any questions you may have. We know that many homeowners want to understand why their heating and air conditioning systems are not working or are very in-efficient. Service Legends has compiled the top questions homeowners have about their home comfort system with videos and written explanations. If you have a question that is not listed, please Ask the Expert and we will provide you an answer.

What does it mean when my air conditioner is freezing up?
When is it time to replace my heating and cooling system?
Should I change my evaporator coil?
How expensive are air conditioning and heat pump systems?
What is involved in installing a new system?
How long can I expect a new HVAC system to last?
How do I properly humidify my home?
Do I really need to have my HVAC system serviced every year?
My furnace or air conditioner is not working what do I do?
Can I service my own equipment?
Why should I replace my existing heating or air conditioning system?
Can I just replace the outdoor unit on an older system to save money?
How do I select the right HVAC system?
What is involved in replacing an old system?
Should I cover my air conditioner during winter months?
At what temperature should I set my thermostat?
How do I know if I need a programmable thermostat for my home?
I have rooms that are way different in temperature, what do I do?
What additional factors will come into investing in a new heating and cooling system?
Is R-22 Freon really being phased out?
What do SEER, AFUE and HSPF mean?
What is a heat pump? How does it work?
What are some HVAC preventative maintenance things I should be aware of?
How often should I check/change my furnace filter?
How does 2-Stage cooling or heating work?
Can carbon monoxide build up in my home and is really that dangerous?
What are the advantages of equipment with variable speed fans?
What if I smell gas?
Why is a system with matched components so important?
Will a bigger sized system perform better?