Airflow

Airflow condensate return units and boiler feed units are packaged receiver and pump sets for steam heating systems, sold alongside matching replacement pumps and seal kits. A condensate return unit collects returning condensate and pumps it on to the boiler or to a feed tank. A boiler feed unit holds a larger reserve and feeds the boiler on demand.

BoilerSupplies.com carries Airflow condensate return tank units from 10 to 500 gallons and boiler feed units from 20 to 500 gallons. The same page lists simplex condensate return tanks, the in-ground condensate unit, the Airflow pumps seal kit, and boiler feed and condensate replacement pumps. The AFP-20DS and AFP-40DS are 20-gallon and 40-gallon condensate units. The AFP-.50-NSP, AFP-1/1.5-NSP and AFP-3/5-NSP are three Airflow pump and motor sets. The in-ground condensate unit is listed as a retrofit for Weiman, Aurora, Federal, Shipco, Chicago, Dunham-Bush and ITT Domestic. Pick by receiver gallons, simplex or duplex, horsepower, voltage, phase, and the footprint of the unit coming out.

Key facts

• Airflow condensate return units run from 10 to 500 gallons.

• Airflow boiler feed units run from 20 to 500 gallons.

• The AFP-20DS is a 20-gallon condensate unit and the AFP-40DS is a 40-gallon condensate unit.

• The AFP-.50-NSP, AFP-1/1.5-NSP and AFP-3/5-NSP are Airflow pump and motor sets.

• Airflow replacement pumps are built to retrofit units from other makers, and the in-ground condensate unit retrofits Weiman, Aurora, Federal, Shipco, Chicago, Dunham-Bush and ITT Domestic.

• In-stock small-pack orders placed before 2:00 PM EST, Monday through Friday, ship the same day.

Can an Airflow pump replace the pump on my old Weiman, Aurora, Federal or Shipco condensate unit?

Airflow replacement pumps are built to retrofit units from other makers. The Airflow in-ground condensate unit is listed on BoilerSupplies.com as a retrofit for Weiman, Aurora, Federal, Shipco, Chicago, Dunham-Bush and ITT Domestic. Send the old unit's make, model, receiver size, horsepower and voltage, plus a photo of the pump mounting, so the mounting and discharge can be matched.

What are other names for a condensate return unit?

Condensate pump, condensate receiver, return pump, return tank and condensate transfer unit all mean the same receiver and pump set. A boiler feed unit is also called a feed tank, feedwater unit or boiler feed pump set. Search BoilerSupplies.com by the Airflow model on the nameplate, such as AFP-40DS, to land on the right listing.

What should I read off my old unit to get the right Airflow pump?

Everything is on the nameplate: the model (AFP-20DS, AFP-40DS, or an AFP-NSP pump), receiver gallons, discharge pipe size, simplex or duplex, and the motor horsepower, voltage and phase. For a retrofit, add the old unit's make and model and a photo of the pump mounting. Say if you need the complete unit, the pump and motor only, or the seal kit.

What is the difference between a condensate return unit and a boiler feed unit?

A condensate return unit is the smaller of the two: its receiver fills from the returns and its own float switch starts the pump, sending condensate to the boiler or feed tank. A boiler feed unit carries a larger reserve and its pump runs when the boiler's level control calls for water. Airflow return units run 10 to 500 gallons, feed units 20 to 500.

How do I pick between the AFP-20DS and the AFP-40DS?

By receiver capacity: the AFP-20DS holds 20 gallons and the AFP-40DS holds 40 gallons. Size the receiver to the condensate load coming back and the time you want between pump cycles. Then match horsepower, voltage and phase to the old nameplate. A larger receiver rides out surges from a long return main.

With the unit model, receiver gallons, horsepower and voltage off the old nameplate, BoilerSupplies.com can match the pump or unit. Request a quote on the site, or call Boiler USA at 1-770-957-9599 or toll free 1-800-780-3776.