Product Comparison

Smarter choice

WaterFurnace geothermal heating and cooling systems come in three basic configurations plus a fourth combo type, designed to meet the needs of your home and provide the highest efficiency and the greatest energy savings. And nearly all of our products meet or exceed the ENERGY STAR® requirements.

Provide year-round comfort. Built to heat through the winter months and provide cooling all summer. WaterFurnace ground source heat pump systems replace the traditional indoor furnace/outdoor air conditioning equipment with one single unit.
These units are designed for heating and cooling water in applications like radiant floor heating, domestic hot water, and snow/ice melt. They can also be used to replace boilers and provide forced air heating/cooling when installed with an air handler.
Provide installation flexibility with the capability to be installed with a remote air handler for whole house heating and cooling. Splits are also useful when installed in conjunction with a fossil fuel furnace for a dual fuel application for efficient operation in colder climates.
Radiant hydronic heat is widely regarded as the most comfortable way of heating the home while all-in-one forced air is typically the most cost-effective. Combo units combine the best of both worlds, providing the luxurious comfort of radiant heat while providing traditional forced air heating as well — all from a single unit.
A crossover heat pump offers the convenience of an immediate HVAC solution in the form of an air source system that can be connected to a ground loop and converted to geothermal at a later date. This offers the flexibility to schedule the ground loop instillation at a date and time that is the most convenient for the homeowner.
Select two or more units to compare

Forced Air All-In-One

7 Series 700A11
7 Series 700A11
Variable Speed All-In-One Unit
43.5 EER / 5.1 COP

The best of the best. Variable capacity system delivers comfort and savings you have to experience to believe.

LOW GWP Icon 5 Series 500A11
5 Series 500A11
Dual Capacity All-in-One Unit
30.0 EER / 5.0 COP

Versatile geothermal heat pump that provides exceptional comfort and reliability expected from the WaterFurnace name.

LOW GWP Icon 3 Series 300A11
3 Series 300A11
Dual Capacity All-in-One Unit
22.4 EER / 4.3 COP

30 years of research, engineering advancements, and manufacturing experience all at a great price point.

Forced Air / Hydronic Combo

Synergy3D SDV
Synergy3D SDV
Dual Capacity Combo Unit
25.7 EER / 4.2 COP

3-in-1 System. Forced air heating and cooling. Capable of radiant floor heat.

Crossover Heat Pump

5 Series Geo-Ready® Split geo-ready
5 Series 500A11 and Geo-Ready® Split
Dual Capacity Crossover Unit
12.6 EER / 2.98 COP

A high efficiency air source heat pump for customers who are ready to commit to geothermal…but need more time to install a ground heat exchanger.

Radiant, Hot Water & Hydronic

5 Series 500W11
5 Series 500W11
Water-to-Water Hydronic Unit
17.5 EER / 3.1 COP

Add-on unit for high volume or dedicated hot water. Perfect for radiant floor heating, spa/pool heating, or forced air when used with a fan coil.

5 Series 504W11
5 Series 504W11
OptiHeat Water-to-Water Hydronic Unit
16.1 EER / 3.3 COP

Add-on unit for high volume or dedicated hot water. Uses OptiHeat vapor injection technology for high temperature output for boiler replacement or radiant floor heat.

Envision NDW
Envision NDW
Large Water-to-Water Hydronic Unit
22.0 EER / 3.5 COP

Perfect for high volume radiant floor heating, spa/pool heating, or snow/ice melt. Great for luxury homes with high hot water demands.

Indoor/Outdoor Split

7 Series 700R11
7 Series 700R11
Indoor Split Unit
40.8 EER / 5.2 COP

Variable speed indoor split combined with variable speed remote air handler for the best comfort and installation flexibility.

5 Series 500RO11
5 Series 500RO11
Outdoor Split Unit
25.3 EER / 4.4 COP

Outdoor split unit used with remote air handler or fossil fuel furnace for dual fuel application. Perfect for homes with limited utility space.

5 Series 500R11
5 Series 500R11
Indoor Split Unit
25.3 EER / 4.4 COP

Indoor split unit used with remote air handler or fossil fuel furnace for dual fuel application. Perfect for homes with limited utility space.