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The 5 Best Portable Air Conditioners (2021 Review)

Portable air conditioners act as supplemental cooling to make you more comfortable when it’s hot and humid outside. In this review, the Old House Reviews Team researched the five best portable air conditioners on Amazon to help you find the product that’s right for you and your home. The products included in this article are available at various home improvement stores, local home centers, and online retailers like Amazon.

Annual Furnace Cleaning Step-by-Step

Here’s how to do fall furnace maintenance and service your heating system before the cold weather kicks in.

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How to Create a House HVAC Plan

Richard Trethewey demonstrates heat loss and gain to design a balanced HVAC system.

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Sizing up a Home Heating System

Richard Trethewey explains how to assess a home’s heating system – and figure out whether you’ll need to replace it

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How to Select a Portable Air Conditioner

Ask This Old House plumbing and heating expert Richard Trethewey walks host Kevin O’Connor through the choices in air conditioners.

Rheem Water Heater Warranty Review

When you purchase a water heater, a Rheem water heater warranty may be enough coverage to protect the item when it’s new. However, factory warranties carry expiration dates, so once this protection period ends, you’re left to face the costs for parts and repair labor alone. A home warranty can protect your budget and give you peace of mind by covering essential appliances and systems regardless of their age. Keep reading to learn how a Rheem water heater warranty stacks up against a home warranty.

An Easy Guide to Gas Fireplaces

We break down the different types of gas fireplaces, questions to consider, key features, and costs.

How to Size a Ceiling Fan

A ceiling fan is a cost-effective way to cool off without cranking up the AC. Read on for tips on how to determine the size of a ceiling fan and how to install one.

Geothermal Heat Pump: How It Works

Learn how a geothermal heat pump system works, how cost-efficient it can be, as well as other advantages.

Pellet Stoves: A Buyer’s Guide

Turn down the household thermostat while warming your rooms, providing ambience, and reducing your energy bills.

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How to Choose the Right Furnace Air Filter

Reviewing air-filter options with This Old House plumbing and heating expert Richard Trethewey

How to Keep a House Warm in Winter

13 simple things you can do to cut down on your heating bills, save money, and have a warm house.

9 Things Your Home's Low Humidity Is Ruining

Keep these items in fighting condition with the help of a humidifier

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How to Install a Smart Thermostat

This Old House plumbing and heating expert Richard Trethewey shows a homeowner how to install and operate an energy-saving smart thermostat

How to Clean a Humidifier

Breathe easier with this advice on buying and maintaining humidifiers

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Retrofit Air Conditioning Using Mini-Ducts

In this video, This Old House plumbing and heating contractor Richard Trethewey explains the benefits of this fit-anywhere cooling system

From the Ground Up: HVAC

The best technologies for indoor comfort and energy efficiency

How to Choose an Air Conditioner

Buying a room air conditioner: How big? How Much?