Hot Tub Heat Exchanger and Swimming Pool Heat Exchangers

Use an outdoor wood furnace in connection with a hot tub heat exchanger or a swimming pool heat exchanger to heat your pool or hot tub.

You can use an outdoor wood burning furnace to heat your swimming pool or hot tub.

The outdoor wood boiler has a second set of ports, standard. You can use the pump you are using for your home heating system to heat your pool when you are not heating your home.

The easiest way to do this is to put a Y connector at the pump so that you can switch it to send water to the home during the winter and to the pool in the spring. The alternative is to mount the second pump on the provided second set of ports that comes free with the furnace.

An extra set of ports is available if needed.

This is a simple diagram showing how a pool and spa kit is hooked up. The second picture shows all of the parts, excluding the hot tub heat exchanger or pool heat exchanger needed. This kit will keep your pool temperature at within one degree.

The shell and tube pool and hot tub heat exchanger is shown in the third picture.

hot tub heat exchanger diagram

Pool and Spa Kit Contents

pool heat exchanger contents

1 – shell pool heat exchanger (titanium or stainless steel)
1 – medium flow/high head circulation pump (Broeder by default, also offer Grundfos and TACO)
1 – digital aquastat (Ranco Digital or Honeywell)
1 – brass drywell for digital aquastat above
1 – 1″ threaded pump flange kit w/ gaskets, bolts and nuts
1 – 1″ MPT x PEX brass ball valve
3 – 1″ PEX x 1″ MPT brass fitting
1 – 1″ FPT brass ball valve

This kit listed above will keep your pool temperature within one degree.


pool heat exchanger

The shell and tube heat exchanger splices into your pool pump and filter plumbing, and then the water is heated.

Heat Exchangers for Pools and Spas Prices

316L Stainless Steel Tube and Shell Pool Heat Exchangers (not for saltwater pool)



Titanium Tube and Shell Pool Heat Exchangers (for use with saltwater pools)



Be sure to call Randy at (608) 519-4664 if you have any questions about heating your pool or hot tub or any other heat exchanger questions!

You can also check out our furnace parts page at Wood Heating Solutions.

Wood Heating Solutions LLC

(608) 519-4664