Guides

Guides and Resources

Straight answers to the questions people ask before they buy, schedule or sign.

GuideWhy Is My AC Blowing Warm Air?Warm air from the vents has a handful of common causes, and several take a few minutes to check. This guide covers the safe homeowner checks and the signs that mean a technician is needed.Read more GuideFurnace Not Turning On: A ChecklistA furnace that will not start is stressful on a cold day, but the first things to check are quick and safe. Work through this list in order, and stop at any step that involves gas or opening electrical panels.Read more GuideHow Often to Change Your Furnace FilterThe best schedule depends on the filter, the household and the system. This guide explains the typical timing, how to read a MERV rating and why airflow matters as much as filtration.Read more GuideHeat Pump vs FurnaceBoth can heat a home well, and the right choice depends on climate, fuel prices, ductwork and the equipment you have now. Here is how they differ and what to ask before choosing.Read more GuideSEER2 and HSPF2 Ratings ExplainedSEER2 and HSPF2 are the efficiency ratings on current air conditioners and heat pumps. This guide explains what they mean, what changed in 2023 and how to use them when comparing equipment.Read more GuideAC Refrigerant Phase-Down ExplainedResidential air conditioners and heat pumps are changing refrigerants, in a transition that has been underway for years. Here is what R-22, R-410A and the newer A2L refrigerants mean for a homeowner, in general terms.Read more GuideCarbon Monoxide Safety and FurnacesCarbon monoxide is invisible and odorless, and fuel-burning heating equipment can produce it. This guide covers how it happens, how to protect your household and what to do the moment an alarm sounds.Read more GuideHow Long Does an HVAC System Last?There is no single lifespan for home heating and cooling equipment. Type, installation, climate and care all matter, and so does what counts as the end of life.Read more GuideAC Frozen Evaporator Coil: CausesIce on an air conditioner's indoor coil or refrigerant line stops it from cooling. Here is what causes freezing, how to thaw the system safely and which causes need a technician.Read more GuideWhat's Included in an HVAC Tune-Up?A tune-up is an inspection, cleaning and safety check for heating and cooling equipment. Here is what a thorough visit typically covers and how to tell a real one from a quick glance.Read more

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