How to Retrofit Radiant Heating in a Bathroom | Ask This Old House

In this video, This Old House plumbing and heating expert Richard Trethewey helps a homeowner solve a cold spot in their home (the bathroom) radiant floor heating and an advanced heat exchanger.

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When a homeowner upgraded his old boiler to a new, combi system that worked with his heat pumps, he noticed he just could get his bathroom to warm up. With the idea to tap into his boiler’s water supply to install radiant floor heating in mind, the homeowner called the team at Ask This Old House for help, and Richard Trethewey answered.

Where to find it?
Richard mounts the heat exchanger [https://homedepot.sjv.io/XYeaBX] by securing it with screws [https://homedepot.sjv.io/vNaKdv]. Then, using a pipe cutter [https://homedepot.sjv.io/KjN65N], he cuts to allow room for a T-fitting [https://homedepot.sjv.io/LXNL6a]. Richard uses compression connections [https://homedepot.sjv.io/DKN6oy] and push-to-connect fittings [https://homedepot.sjv.io/GmNyWE] to run the piping from the T-fitting supply and return of the heat exchanger.

Richard mounts the manifold by securing it to the plywood with screws. He then uses a pipe cutter to cut and connect the piping from the supply and return of the heat exchanger into the supply and return lines on the manifold.

Richard mounts the radiant heat transfer plates [https://homedepot.sjv.io/NkqxLO] to the underside of the subfloor using screws. The homeowner snaps the PEX piping [https://homedepot.sjv.io/75N6P3] into the mounted channel plates up and down the joists for the length of the room and then packs fiberglass insulation [https://homedepot.sjv.io/baoBMB] on top of the piping to ensure that all the heat generated by the radiant goes up towards the bathroom.

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Materials:
T-fittings (solderless) [https://homedepot.sjv.io/LXNL6a]
Compression connections [https://homedepot.sjv.io/DKN6oy]
Push-to-connect fittings [https://homedepot.sjv.io/GmNyWE]
Transfer plates [https://homedepot.sjv.io/NkqxLO]
PEX pipe [https://homedepot.sjv.io/75N6P3]
A heat exchanger with pumps [https://homedepot.sjv.io/XYeaBX]
Screws [https://homedepot.sjv.io/vNaKdv]
A variety of check valves [https://homedepot.sjv.io/rQPKmG]
Pressure relief valves [https://homedepot.sjv.io/g1Enx5]
Expansion tank [https://homedepot.sjv.io/zNVKom]
Fiberglass insulation [https://homedepot.sjv.io/baoBMB]

Tools:
Power drill [https://homedepot.sjv.io/R50Wna]
Propress for solderless connections [https://homedepot.sjv.io/KjN6Ma]
Oscillating tool [https://homedepot.sjv.io/g1LKDB]
Rubber mallet [https://homedepot.sjv.io/nLVg7a]
PEX cutter [https://homedepot.sjv.io/KjN65N]

About Ask This Old House TV:
From the makers of This Old House, America’s first and most trusted home improvement show, Ask This Old House answers the steady stream of home improvement questions asked by viewers across the United States. Covering topics from landscaping to electrical to HVAC and plumbing to painting and more. Ask This Old House features the experts from This Old House, including general contractor Tom Silva, plumbing and heating expert Richard Trethewey, landscape contractor Jenn Nawada, master carpenter Norm Abram, and host Kevin O’Connor. ASK This Old House helps you protect and preserve your greatest investment—your home.

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How to Retrofit Radiant Heating in a Bathroom | Ask This Old House
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Видео How to Retrofit Radiant Heating in a Bathroom | Ask This Old House канала This Old House