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Signs Your Chimney Needs a Checkup

Gathering around a wood-burning fireplace is an irresistible winter ritual, but a fire is still, well, a fire.

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Baseboard Heater Making Noise? Here’s How to Fix It

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner diagnose and solve a baseboard hot water system that makes noise.

All About Furnace Replacement: Cost & When to Do It

Replacing a furnace is a big task with a big price tag. However, having a home warranty can go a long way toward minimizing furnace replacement costs.

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Why Is My Air Conditioner Not Cooling?

Is your air conditioner not cooling? From refrigerant leaks to a malfunctioning compressor, these are five reasons why your air conditioner isn’t cooling and ways you can troubleshoot and prevent the issue.

How to Quiet Noisy Ducts

Is there a way to stop the banging from your metal ductwork? Richard Trethewey diagnoses the problem and points to some solutions

Too Much Dust

Why is the house so dusty even when the air filters are clean?

Home Heating Guide For Beginners

Heating is the most basic requirement of a house. Learn about the various types of home heating systems and how to maintain them.

How Often You Should Change Your Air Filter

Changing the air filters in your HVAC system is an essential practice that ensures clean air circulates throughout your home. In this article, we discuss the importance of changing an air filter and give you tips on how to do it.

17 Fireplace Remodel Ideas

We rounded up our favorite ideas to help you update your fireplace for a more modern look.

9 Air Conditioner Maintenance and Care Tips

Servicing your air conditioning regularly helps keep costs down and your AC in great condition.

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How to Install a Whole-House Dehumidifier

Ask This Old House plumbing and heating expert Richard Trethewey shows how to control humidity throughout the house all year round.

How to Seal Leaky Ductwork

Improve the air quality and keep your home energy efficient by sealing your ducts.

Top 10 Air Conditioning Tips

Beat the heat this summer by having the cleanest, coolest, and most-efficient air conditioner on the block.

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How to Repair a Frozen Air Conditioner

This Old House plumbing and heating expert Richard Trethewey shows how to prevent ice buildup from shutting down an air-conditioning system

How to Clean a Window Air Conditioner

Stay cool and save money with five simple tasks–most done just once a year–that ensure your unit keeps working efficiently.

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How to Fix Leaks in Air Ducts

This Old House host Kevin O'Connor and energy auditor Paul Scheckel find and fix leaky heating ducts

Calling in an HVAC Pro

Arm yourself with information. For instance: Full-service companies tend to be current on the latest advances in the field. Read on.