

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The Rheem AP18339 Fiberglass Thermal Insert is essential for reducing heat loss in water heaters. It fits directly inside the combustion chamber to provide effective insulation. The fiberglass material used in this insert offers excellent thermal resistance. This minimizes heat escape, enhancing the energy efficiency of your water heater.
Designed for easy installation, this insert helps maintain optimal water temperature, thus improving energy savings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!