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H.E.A.T. 800-524-4280
NYC- Connecticut

Tankless Repair/ Help

Tankless Water Heater Repair, NYC

NP240repair-Domestic tankless water heater

-Wall hung / mod-con boilers

-Combi boilers

Within our network are Certified Repairmen for the following domestic tankless water heaters & wall hung boilers, NYC.

  • Navien
  • Takagi
  • AO Smith
  • American
  • Viessmann

Call us if you’re having an issue with a high-efficiency water heating product within The Greater NYC Area.  We can fix, repair, service type, model and high-efficiency product, from the list of manufactures above.

We need information before we can do anything else, so please have this info available before you call.

  1. Tell us the issue/ please provide Error Code (if possible).
  2. Please have the Model number & Serial number ready.
  3. We also want to know how long ago the unit was installed.


Emergency Tankless Repair, NYC.
Many of our installers are also certified repairmen.  If for any reason your system goes down, we have the repairmen when you need them most.  Our team of certified installers are factory trained and able to fix nearly any high-efficiency heating system, whether we installed it or not.   Honesty:  whether we have the parts on-hand or available needed to complete the repair, is another thing altogether.

Repair part availability: Learn more


When you choose us for your high-efficiency heating system you are choosing a company that fully commits to the longevity of your heating systems in mind.

From the first call, to the NYC city inspector signing off on the completed project and every step between, High Efficiency Application Technology is here for you.