A homeowner's warning on Reddit is a reminder that even efficient electrical equipment can become a headache when the installation is sloppy.
That matters because upgrading your heating and cooling system can be one of the best ways to lower utility bills and protect yourself against rising energy prices — but only when the work is done properly.
Here's what to know
The homeowner detailed their experience with a Bosch BOVA-36HDN1-M20G in r/heatpumps.
They said the system was running at "above 76dB heating" and that the lineset made a "whistling" sound. The unit's vibration was also severe enough to "shake the light fixtures."
"We cover it in winter and only use it as AC," the homeowner said, adding that a "hack job company" had installed the unit on the roof only two years ago.
If you're trying to avoid that kind of outcome, Palmetto can help you understand your options and slash your energy bills. Its Comfort Plan network can help you find efficient heating and cooling solutions for your home and connect you with vetted installers.
The detail about the roof especially worried commenters.
"Who installs unit on roof," one person wondered. "You are fully exposed to wind from all sides. Ideally you'd want one on ground isolated from structure.. unless you got some concrete wall."
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More background
Reused line sets, aging electrical hardware, poor mounting, and inadequate vibration control can all create safety, comfort, and performance issues.
That is especially frustrating when it happens with heat pumps, which are designed to heat and cool efficiently in a single package. When installed correctly, they can help reduce energy waste and limit exposure to volatile fuel prices and electricity costs. When installed poorly, homeowners may lose the heating side of the investment altogether.
Roof-mounted systems, like this Redditor's, can also be harder and more expensive to service. "Ladder charge adds up," the original poster explained.
What can be done?
If you're replacing an HVAC system, it can be worth asking detailed questions before signing a contract: Will the lineset be replaced or pressure-tested? Will the disconnect box and mounting hardware be new? What sound level should you expect? Who handles startup and commissioning?
It is also wise to be cautious about do-it-yourself electrical work. Replacing a disconnect box or adding components around a rooftop compressor involves high-voltage equipment, exposure to weather, and manufacturer requirements, making it usually a job for a licensed professional rather than an untrained homeowner.
If you're not ready to spend upfront, Palmetto's Comfort Plan offers options to lower your heating and cooling costs. Palmetto Comfort Plans also include maintenance, which can be especially valuable if you want fewer surprise service bills.
You can also pair solar panels with electric appliances, such as efficient HVAC systems, to bring your utility costs even lower. EnergySage makes it easy to find the best solar system and installer for your home and budget through its free comparison tools.
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