HVAC Air Conditioning, Heating, Contractor, Installations, Allentown, Bethlehem, Easton, Lehigh Valley
Now with 3 locations
24hr Emergency Service
Professional Duct Cleaning
Residential & Commercial
1-800-544-HEAT
Call Us Today For A Free Estimate!

border Hannabery HVAC Sales, Installations, Service, Pennsylvania new furnace, new heating system, new air conditioning system, new heat pump, new boiler air conditioning service, heating service, hvac maintenance, duct cleaning, lehigh valley, allentown, pa hvac, installations, installers, service, replacement, lehigh valley air conditioning contractor, heating contractor, furnace installers, air conditioning installers, heat pump installers air conditioner replacement, furnace replacement, heat pump replacement, boiler replacement geothermal heat pumps, groundsource heat pumps, watersource heat pumps, geo-thermal heat pumps, ground-source heat pumps HVAC Store, HVAC Parts, HVAC Accessories
  • Ductless mini split systems, lehigh valley
  • furnace cleaning, heating inspections, ac tune-ups
  • Trane Financing, Trane Rebates, HVAC Rebates
  • $25 off high efficiency air cleaner installation, lehigh valley
  • Standby Generator Installations, Lehigh Valley, PA
  • air duct cleaning, vents cleaned

corner corner

bullet Commonly Reported HVAC Problems:


My heat pump is iced-up, mine blows cold air. My pilot goes out. Do you know what to do?You have problems? We have answers! Hannabery HVAC

Commonly Reported HVAC Problems:
[Copyright © 1996-2013. Hannabery HVAC. All rights reserved.]


Heat pump blowing cold air:

Heat pump blowing cold air, heat pump not heating
There are two different scenarios related to this issue...
  1. The heat pump really is blowing cold air.
  2. The customer just thinks the heat pump is blowing cold air.

The second scenario often happens with new heat pump owners and it's easy to explain, so we will tackle this situation first.


It's quite simple... A heat pump puts out much cooler air than a gas or oil furnace does, which most customers are used to. Furnaces tend to put out about 130 to 140 degree air. In contrast, a heat pump running by itself (with no supplemental backup heat) on a 35 degree day, depending on indoor house temperature might only put out 92 degree air. On a 20 degree day, it might drop to 85 degrees.

Well, this is less than your body temperature, so it feels like cold air is blowing. But, it is still warmer than the indoor house temperature, so it is still putting heat into the house. Unlike a furnace that puts out a lot of heat for short periods of time, a heat pump will put out less heat for longer periods of time.

So if you are new to heat pumps, try measuring the air temperature with an accurate thermometer before calling for service. If there is no difference between the return temperature and the supply temperature then there is a problem.


Now, what if the heat pump really is blowing cold air? In other words, it's not putting out any heat at all. Well this could be caused by several things. It could even be running in the air conditioning mode due to a malfunction.

Below is a list of possible causes. Items in red usually require a service call. Items in blue however can be addressed, some even fixed by the homeowner.

Red = Professional fix | Blue = Homeowner fix
toolbox for heating and air conditioning service and repairs
  • Low refrigerant charge
  • Refrigerant flow-related problem - restriction/bad metering device
  • Poor efficiency- needs cleaning and servicing
  • Bad reversing valve
  • Bad compressor valves
  • Compressor not running
  • Running in A/C mode
  • Outdoor unit iced-up because of a malfunction
  • Outdoor unit iced-up - weather related
  • Snow drift against outdoor unit
  • Outdoor unit not running
  • Cold return temperatures - examples: Air handler in attic and return trunk disconnected from unit, pulling in cold attic air. Unit in basement with a basement return and open windows. Thermostat set below 65 degrees.

The bottom four causes in blue are commonly found problems and can be addressed by the homeowner.

Please keep in mind that the information found on our website is provided free of charge and Hannabery HVAC does not assume any liability resulting from the information we provide. We hope this information helps, but please note that these are just rough guidelines, and not all possible situations are covered. Your HVAC system should be inspected and repaired by a trained technician.

Commonly Reported HVAC Problems


How Comfortable Do You Want To Be?

Call us at 1-800-544-HEAT

[Must be in our service area]


bullet The HVAC Store

Generaire Complete Pad Kit

Aprilaire Water Panel
Change annually
Aprilaire Humidifier Water Panel: Stock #35
Fits Models: 350, 360, 560, 560A, 600, 700, 760, 760A

Price: $22.01


Aprilaire Media Replacement
Suggest replacing twice a year

Aprilaire Media Replacement
Suggest replacing twice a year

Trane, York, Rheem, Weil McLain, Peerless, Buderus, ClimateMaster, Fujitsu, Aprilaire, Honeywell
A Hannabery HVAC Publication
Packed with the latest news, information, tips, special offers, service reminders, and more!

Subscribe today! Enter your email below.


Our Credentials
BBB Accredited Business with A-plus rating, Allentown, Quakertown, Clarks Summit NATE-certified Service Technicians, Lehigh Valley, Lehigh County SuperPages SuperGuarantee Rheem equipment, Rheem dealer, Rheem installer, allentown, bethlehem, easton, pa Member of Associated Builders and Contractors (ABC) Eastern PA Chapter Trane Comfort Specialist Dealer Member - Greater Lehigh Valley Chamber of Commerce Angie's List 2012 Super Service Award Winner

Hannabery HVAC Facebook page, Air Conditioning, Heating Deals in Allentown, Bethlehem, Easton, Lehigh Valley

Website design by webmaster webmaster@hannabery.com
Copyright © 1996-2013. Hannabery HVAC. All rights reserved.
PA CONTRACTOR #8215