Angi
“Just in time. Affordable and reliable company!!! Thank you Josh.”
Vladimir G.
Shrewsbury · Water Heater - Install or Replace
Problem Guide
Heat Pump Icing Up? Excessive Frost Needs Diagnosis
Some frost during cold-weather operation is normal, but heavy or persistent ice can indicate a defrost, airflow or refrigeration problem.
What This Problem Can Mean
A heat pump should periodically defrost itself. If ice continues building or blocks airflow, the system may need repair.
Warning Signs
Outdoor coil covered in solid ice
Fan cannot move air
Unit never seems to defrost
Heating performance drops sharply
Possible Causes
Defrost-control issue
Sensor problem
Airflow restriction
Refrigeration-system fault
What To Do Now
Keep outdoor unit clear of snow and debris
Do not chip ice from the coil
Schedule service if ice does not clear
What Not To Do
Do not use sharp tools on the coil
Do not pour boiling water onto equipment
How Tandem Mechanical Can Help
Tandem Mechanical can evaluate defrost operation, airflow, sensors and refrigeration performance.
Residential Properties
Applies to ducted heat pumps and ductless mini splits.
Commercial Properties
Heat-pump service is available for eligible commercial systems where offered.
Heat Pump Icing FAQs
Real Customer Reviews
What Tandem Customers Are Saying
Angi
“Responsive, flexible and nice clean work. Listens to needs and provides professional service.”
Doug L.
Palmer · Tankless Water Heater - Install
Angi
“Joshua, the owner, explained the best options for my plumbing needs, and gave me the estimate when he said he would. The repairs were completed on time & the estimate was the actual bill. We now have a working ice maker and no more floods in our basement!”
Randy S.
Google
“Sam from Tandem Plumbing responded promptly to fix an issue with my toilet, and the entire job was handled with great professionalism. He has a reassuring and approachable manner that made the experience stress-free. I was also pleasantly surprised by how fair and reasonable the pricing was. I only wish I’d called sooner!!!”
Amy Lynn
Westfield · Plumbing
Angi
“Prompt, professional, quality work. Highly recommended”
TJ S.
Angi
“Excellent job friendly workers. Very well done. Everything was cleaned up. Would highly recommend them.”
Mary C.
Angi
“Just in time. Affordable and reliable company!!! Thank you Josh.”
Vladimir G.
Shrewsbury · Water Heater - Install or Replace
Angi
“Responsive, flexible and nice clean work. Listens to needs and provides professional service.”
Doug L.
Palmer · Tankless Water Heater - Install
Angi
“Joshua, the owner, explained the best options for my plumbing needs, and gave me the estimate when he said he would. The repairs were completed on time & the estimate was the actual bill. We now have a working ice maker and no more floods in our basement!”
Randy S.
Need Help With Heat Pump Icing?
Call Tandem Mechanical or book service online. Availability varies by service area, technician capacity and urgency.