You are here:
Heating, Air Conditioning, Fridge, HVAC/Expert Profile
Expertise
All areas of residential heating and cooling service/repair. I am a service technician and have been all of my career. I can't stand to see people ripped off or sold new units when it needed simple repairs. I have specialized in geothermal, hydronics and fuel oil. I can answer questions on accessories such as humidifiers and ventilators. Will answer questions on ductless split system, commercial ice machines and commercial refrigeration, zoning, heat pumps, tankless hot water , and thermostats. Experiance in both old units and all the new residential equipment such as modulating furnaces and two stage a/c units.
Experience in the area
15 years experience in residential service and commercial refrigeration
Organizations
Refrigeration Service Engineers Society North American Technician Excellance
Education/Credentials
Two year technical school degree, North American Technician Excellance certified in residential: fuel oil, a/c and heat pumps, American Refrigeration Institute certified in residential: a/c, air distribution, heat pumps, gas furnace and oil furnace, Ongoing yearly fuel oil training through Beckett national education program and national oilheat research alliance, Yearly Fujitsu ductless split and Rinnai tankless water heater training
Awards and Honors
Manitowoc field service ice machine factory trained
What do you like about this subject?
I love the new technology that is constantly changing in this field. This forces me to study and take classes which furthers my education. After 15 years the education never stops.
Average Ratings
Recent Reviews from Users
K = Knowledgeability C = Clarity of Response T = Timeliness P = Politeness| User | Date | K | C | T | P | Comments |
|---|---|---|---|---|---|---|
| sam | 10/28/09 | 8 | 7 | 10 | 10 | |
| Tony | 10/26/09 | 10 | 10 | 10 | 10 | |
| corrie | 10/25/09 | 10 | 10 | 10 | 10 | thanks mike after carefull inspecting the wiring ..... |
| Paulie | 10/24/09 | 10 | 10 | 10 | 10 | Again, Mike proved to be 10. Thank ..... |
| james | 10/23/09 | 10 | 10 | 10 | 10 |
Recent Answers from Mike Lehner
2009-10-28 Broan bathroom heater:
Coleen, sometimes electric heaters have a smell of burning dust when they haven't been used in a long time. Some of these small heaters have a blower motor, if this goes bad then you might get a mechanical
2009-10-28 Trane Vs Rheem:
Stephanie, The difference between those brands is Trane uses a variable speed draft motor where Rheem does not. This will give a little more efficiency for the Trane but not really sure this is worth a
2009-10-28 heater side of a/c unit won't work:
Phil, this could be several issues. Might want to check obvious things like make sure the gas is on. The heating control board on this unit should flash a code, this might help narrow the problem down
2009-10-28 Miller furnace, drips at nozzle:
Jeffrey, Kerosene may be causing the problem. I have only used kerosene for temporary testing. Kerosene has a different flashpoint over fuel oil, so you really have changed the way this furnace fires
2009-10-27 Buzzing noise:
Sam, a noise when the unit is off is unusual. When the unit is off there is no power applied and noises should happen. I have seen this before and the problem was the compressor discharge valve leaking
Answers by Expert:
©2009 About.com, a part of The New York Times Company. All rights reserved.