Heat Pump Cold Weather Problems & Repairs

Winter icicles hanging on a roof.

Heat pumps often don’t work well during extremely cold weather. This article discusses how to fix cold-weather heat pump problems. This is a collection of questions we’ve received at HomeTips, along with the answers we’ve offered. In This Article: Heat Pump Not Heating Heat Pump Does Not Come On Heat Pump Is Frozen Should I […]

How a Gas Furnace Works

Gas Furnace Parts Diagram

This illustrated guide diagrams the various parts of a gas furnace and explains how they all work together. A gas forced-air heating system goes into action when the thermostat tells it that the room temperature has dropped below a preset comfort level. The thermostat sends a low-voltage electrical signal to a relay in the furnace, […]

How Central Heating Works

Diagram of a central air-conditioning system of a house including a network of warm air and cold air ducts.

How do central heating systems work? The diagrams and descriptions in this section define central heating and air conditioning, forced-air furnaces, as well as radiant heating systems. Need Help NOW? Get a Local Heating Pro Fast! A central heating system has a primary heating appliance such as a furnace or boiler located in an out-of-the-way […]

How to Replace a Furnace, AC or Heat Pump Filter

Man’s hand removing an air conditioner filter on a wall return-air register.

Dirty AC or furnace filters are the number one problem when forced-air heating and cooling systems don’t work right. With a central forced-air heating and cooling system, heat-pump, furnace or AC air filters remove dust and allergens from the air before warming or cooling air and returning it to your rooms. For this reason, filters […]