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Advice
HVAC advice
In-depth, practical articles for homeowners. No jargon, no sales pitch.
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Article
AC running but not cooling? 9 causes and how to fix them
Air conditioner running but blowing warm air? Work through nine common causes, from thermostat settings to refrigerant leaks.
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Article
Furnace blowing cold air? Here's why and what to do
Why a furnace blows cold air, from thermostat fan settings and dirty flame sensors to tripped limit switches and condensate problems.
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Article
Heat pump vs. furnace: which is right for your home?
Compare heat pumps and gas furnaces on climate, running costs, comfort, upfront cost and dual-fuel options.
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Article
How often should you change your air filter?
How often to change an HVAC air filter based on filter type, pets, allergies and season, plus how to pick the right MERV rating.
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Article
R-410A to R-454B: what the refrigerant change means for you
Why new US air conditioners and heat pumps use A2L refrigerants like R-454B and R-32, and what it means for repairs and replacement.
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Article
Smart thermostats: do they save money, and which should you buy?
Do smart thermostats save money? How to choose one, C-wire compatibility, heat pump wiring and the best settings.
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Article
How to choose an HVAC contractor (and avoid costly mistakes)
How to find, vet and compare HVAC contractors: licensing, insurance, load calculations, written quotes and red flags.
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Article
15 practical ways to lower your cooling bills this summer
Practical ways to cut air conditioning costs, from thermostat settings and ceiling fans to shading, sealing and maintenance.
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