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The Heating & Cooling Blog

By MR. HVAC

Outdoor air conditioning unit next to a brick wall with colorful flowering plants in the garden.

AC Making a Humming Noise?

June 25, 2026

Some noise from a running air conditioner is normal. The outdoor unit hums as the compressor runs, and you can hear...

Finger pressing test button on white carbon monoxide alarm mounted on a wall.

Carbon Monoxide Detector Beeping? Here's What Each Pattern Means

June 19, 2026

A carbon monoxide detector going off at 2 a.m. is one of the more alarming things that can happen in a home. But...

Black leather chair with wooden armrest next to a white wall heater and green potted plant indoors.

Air Purifiers, Mold, and How to Breathe Easier at Home

June 18, 2026

When the air in your home feels heavy, stale, or hard on your sinuses, an air purifier is usually the first thing...

Technician using pressure gauges to check air conditioning unit maintenance outdoors near brick wall.

What Is Considered an HVAC Emergency?

June 12, 2026

An HVAC emergency is any situation where your heating or cooling system threatens your safety, your health, or your...

Technician wearing safety glasses inspecting and repairing electrical wiring inside a home furnace unit.

What Does an AC Tune-Up Include? Here's What a Technician Actually Checks

June 04, 2026

An AC tune-up means different things to different companies. Some providers run through a thorough 60-minute...

White PVC pipes arranged vertically and horizontally on a gray wall forming a complex plumbing network.

How to Unclog Your AC Drain Line (And Keep It Clear All Summer)

June 03, 2026

Your air conditioner pulls humidity out of the air every time it runs. When this happens the moisture drips off the...

Sunlight streaming through a window illuminating dust particles in a dimly lit room.

Why Is My House So Dusty? The HVAC Causes Most Homeowners Miss

May 29, 2026

Heating and cooling equipment moves enormous volumes of air through your home every day. If that system is pulling...

Person removing or installing a white ceiling air vent cover in a home interior.

Weak Air Flow From Vents in House? How to Tell If You Need Duct Cleaning, HVAC Duct Repair, or Something Else

May 27, 2026

Weak air flow from vents in house complaints are among the most common HVAC issues we address for homeowners in...

Hand holding HVAC manifold gauge set with blue and red dials in front of an air conditioning unit outdoor.

Can I Recharge My Own Air Conditioner?

May 22, 2026

The short answer is no, not legally and not safely. While you can buy DIY AC recharge kits online,...

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