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The Heating & Cooling Blog

By MR. HVAC

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How Often Should HVAC Systems Be Serviced?

May 19, 2026

Air conditioning systems should be inspected twice a year, in spring before cooling season, and heating systems...

White Horizon wall-mounted air conditioner showing digital temperature display and open air vents.

Energy-Efficient HVAC Upgrades That Make Your Home Work Smarter

May 13, 2026

Your heating and cooling system runs almost constantly throughout the year, which means it accounts for a huge chunk...

Industrial HVAC air handling unit suspended from ceiling with exposed copper pipes and ductwork in building.

Aux Heat vs. Emergency Heat: What's the Difference on a Heat Pump?

May 11, 2026

If you have a heat pump, you have probably seen AUX HEAT or EM HEAT flash on your thermostat at some point during a...

Close-up of a Tekton screwdriver and screws on a metallic surface in a workshop or industrial setting.

Furnace Exhaust Pipe: What Does it Do? Warning Signs of Failure

May 07, 2026

Your furnace exhaust pipe does one job: safely carry combustion gases out of your home. When it works, you never...

Technician repairing and wiring components inside an outdoor air conditioning unit with visible copper pipes and wires.

Dirty Evaporator Coil: Symptoms, Causes, and What to Do Next

May 05, 2026

Your air conditioner runs, the thermostat is set correctly, and the filter is reasonably clean. But the house still...

Technician using a wrench to repair or maintain an open boiler or furnace with visible pipes and wiring.

Furnace Control Board: What It Does and Signs It's Failing

April 30, 2026

Most furnace problems come down to one of a handful of familiar parts: the igniter, the flame sensor, the pressure...

Residential air conditioning unit with refrigerant tank and pressure gauges installed outside house near grass and fence.

What is a Home AC Freon Recharge?

April 27, 2026

Your AC is running, but the air drifting out of the vents feels lukewarm at best. Before you panic and start pricing...

Man in green shirt using remote to control wall-mounted air conditioner in a bright modern living room.

Ductless Mini Splits: A Way to Cool (and Heat) Your Home

April 24, 2026

A mini split is a two-part HVAC system. You get a small outdoor compressor and one or more indoor air-handling...

Close-up of an electrical panel with circuit breakers, labeled wires, and indicator lights glowing orange.

How to Lower Your Electric Bill With Smarter HVAC Habits

April 21, 2026

Heating and cooling eat up close to half of the average home's energy use, which means your HVAC system is the...

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