Heating & Cooling Videos

Ask This Old House plumbing expert Richard Trethewey learns about an HVAC system that allows each room to be zoned out using smartphone technology.

Over the years, This Old House plumbing and heating expert Richard Trethewey has helped hundreds of homeowners reduce their energy consumption and slash their monthly utility bills

This Old House plumbing and heating expert Richard Trethewey explains how adjusting the thermostat can reduce energy consumption and save you money.

Ask This Old House plumbing and heating expert Richard Trethewey shows an innovative new way to seal ducts from the inside

Scott Caron, master electrician for Ask This Old House, helps a homeowner put in an exhaust fan to rid her kitchen of smelly cooking odors.

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

Use a specialized foam panel to lock the PEX tubing in place, cover it with a sand-and-cement mix, and tile away.

Ask This Old House plumbing and heating expert Richard Trethewey shows how to divide a home's heating and air-conditioning system into different zones.

Ask This Old House plumbing and heating expert Richard Trethewey shows how a professional would install a whole-house humidifier.

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

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

This Old House plumbing and heating expert Richard Trethewey helps a homeowner insulate his HVAC ductwork.

This Old House plumbing and heating expert Richard Trethewey and host Kevin O'Connor install a ductless heat pump to heat and cool a room

Ask This Old House plumbing and heating expert Richard Trethewey helps locate the leak on a steam boiler that is losing water

This Old House general contractor Tom Silva helps a homeowner install an energy-efficient whole-house fan

This Old House plumbing and heating expert Richard Trethewey installs a device that will heat a pool with the heat produced by an air conditioner.

Replace two devices, your water heater and boiler, with a single combi boiler unit that’s more efficient and compact.

This Old House plumbing and heating expert Richard Trethewey helps a homeowner install a wireless thermostat to control one zone of heating.

Install a wood stove insert to increase efficiency and heat output from your fireplace.

This Old House plumbing and heating expert Richard Trethewey shows how to install a new water heater when there's no chimney

We show you how to add a pellet stove as a supplementary, efficient heat source to your house step-by-step.

This Old House plumbing and heating expert Richard Trethewey shows how to control the temperature to every room of the house

This Old House general contractor Tom Silva shows how to upgrade an entryway with a brand-new, low-maintenance, energy-efficient door

Tom Silva shows you how to keep cold air from coming through windows and doors.

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

Save energy and stay cozy by linking your system to the outside temperatures

This Old House general contractor Tom Silva shares his fast fixes for a drafty door

This Old House plumbing and heating expert Richard Trethewey reveals how home automation delivers comfort, convenience and energy savings

This Old House plumbing and heating expert Richard Trethewey explains how to silence squeaky, creaky pipes.

This Old House general contractor Tom Silva shares tips for fixing a drafty door

Silencing a rattling metal heating unit with This Old House plumbing and heating expert Richard Trethewey

This Old House plumbing and heating expert Richard Trethewey explains how the pros retrofit a compact cooling unit.