Two months ago, I had a brand new Lennox heatpump installed to replace a 12 year old Carrier heatpump/oil furnace system. The heatpump unit was very noisy right from the start. The installers came back & tightened some loose screws on the outdoor unit. A few days later it was just as bad! A second tightening session followed but a pulsating noise developed which prompted a third visit, this time with a Lennox rep. The technician & the Lennox rep both said the pulsating was normal!!! My neighbor has a 10 year old Lennox heatpump that hums along quietly. Am I dreaming to think that there is something wrong with my brand new unit?
Thanks for your help.
Maybe you should call another company to get another opinion. Obviously, both the installer and Lennox have an interest in you accepting it like it is. Maybe it is normal and maybe it isn't.
Unfortunately Lennox isn't going to pay for me to have a service call from another company.
Today it's even louder than it was yesterday! I think I made a grave error in buying a Lennox System. Apparently Lennox don't give a damn about customer satisfaction. They hey seem to be ignoring the situation.
What's the model of heat pump? Did they disable the fan or compressor to determine what's causing the noise?
Where is it installed? IE in a corner where noise can reverberate?
I'd love more information on this one. All in all, Lennox I installed seemed to be pretty good in terms of quietness. A lot depends on installation though. They might've undersized the pipes, or failed to evacuate properly. Though I would imagine the Lennox rep would notice all of that pretty quick. I have encountered situations when the metal platings would rattle. In some cases, I had to put some weather stripping along the edge of the access panel to the pressure switch to stop the rattling. But this issue has happened to practically all makes and models at one time, or other.
What is the model of that thing?
It's an XP14-024-230-09 installed on the side of the house, not in a corner, on the same poured concrete pad as my Carrier 25HPA424A which was very quiet. Yes, the metal panels were part of the noise initially but after tightening them twice they are still noisy. But I'm sure that has nothing to do with the pulsating.
No, they haven't disabled the fan or compressor as far as I know.
Today I finally got a call from the company. They're coming next week with, I hope, another Lennox rep for another look.
I'm wondering if the piping is fastened to the joist in a way that the noise is resonating through the joist into the house?
When they come back, have them run components individually to see which is causing the problem; OD fan, ID fan, compressor, heat mode, cool mode...
The pulsating & vibration is outside at the xp14 itself. After a 5th visit, 2 from the Lennox rep, the vibration and pulsating have almost gone. But I'm reserving judgment for a few weeks as the problem keeps returning. Hopefully this is the last time.
If I had it to do over again, I would have gotten anything but Lennox!!! NOT HAPPY! My previous system was Carrier. I was very happy with it but the furnace was due for replacement so I decided to do the whole thing together. Very bad choice! >:(
Any idea what was actually done?