Water Furnace

Geothermal Heating & Cooling

Weis offers three primary WaterFurnance geothermal heating and cooling systems designed to heat and cool your home by utilizing energy from the earth resulting in the highest standard of efficiency and the greatest energy savings available. Almost all of the products offered by Weis meet or exceed the Energy Star® requirements needed to take advantage of the latest tax credits.

All-In-One Systems

ENERGY STAR® Certified

3 Series (300A11)

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

Efficiency Rating: 22.3 EER / 4.1 COP
ENERGY STAR® Certified

5 Series (500A11)

An upgrade to our Envision line that upholds the exceptional comfort and reliability expected from the WaterFurnace name.

Efficiency Rating: 30 EER / 4.8 COP
ENERGY STAR® Certified

7 Series (700A11)

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

Efficiency Rating: 41.0 EER / 5.3 COP

Split Geothermal Systems

Envision NDW (NDW)

Hydronic. Perfect for radiant floor, spa, pools, snow & ice melt.

Efficiency Rating: 22.5 EER / 3.5 COP

5 Series (504W11)

Hydronic. Add-on to other unit for high volume hot water users. Perfect for radiant floor, spa, pools, fan coils.

Efficiency Rating: 18.5 EER / 3.8 COP

Envision NSW (NSW)

Hydronic. Add-on to other unit for high volume hot water users. Perfect for radiant floor, spa, pools, fan coils.

Efficiency Rating: 17.5 EER / 3.1 COP
ENERGY STAR® Certified

5 Series (502W12)

Hydronic. Add-on to other unit for high volume hot water users. Perfect for radiant floor, spa, pools, fan coils.

Efficiency Rating: 19.0 EER / 3.5 COP
ENERGY STAR® Certified

Synergy3D (SDV)

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

Efficiency Rating: 23.7 EER / 4.5 COP

Hydronic Geothermal Systems

5 Series Outdoor Split (500RO11)

Outdoor Unit. Used with remote air handler or gas furnace.

Efficiency Rating: 25.3 EER / 4.4 COP

5 Series (500R11)

Used with remote air handler or gas furnace.

Efficiency Rating: 25.3 EER / 4.4 COP
ENERGY STAR® Certified

Synergy3D (SDV)

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

Efficiency Rating: 23.7 EER / 4.5 COP

Uncategorized Systems

Envision Air Handler (NAH)

Used with split units to move air to and from the home.

Efficiency Rating: N/A