Mini-Split Deep Cleaning in Alexandria
Electric utility: Eversource / NH Electric Co-op (split territory) · Grafton County
The fuel numbers in Alexandria are lopsided in a way that matters to us. Something like 54 percent of the houses here run on fuel oil or kerosene, and about 30 percent heat with wood — and that second figure is roughly five times the statewide share, which sits around six percent. In a town that is forty-three square miles of hillside at forty people to the square mile, that is not surprising. Firewood is the cheapest thing on the property. The oil keeps the pipes alive in February and the stove does the actual work.
The oil furnace is not our problem. It is sealed, it is vented, and it never touches the air in the room. The stove is a different animal. Every reload puts a puff of fine ash into the living room, and the mini-split is four feet above it pulling that same room air across an aluminum fin pack all day long. Here is the part people do not picture: in cooling and in dry mode that coil is below dew point, so it is wet. Dry ash landing on a wet coil does not stay dust. It turns to paste, and the paste dries to a crust in the gaps between the fins. Running a shop vac over the outside of that fin pack accomplishes nothing whatsoever.
Cordwood ash and pellet ash behave a little differently — pellet ash is finer and more of it stays airborne long enough to make it up the wall — but both finish in the same two places: down in the fin pack and on the curved vanes of the blower wheel. Almost nobody calls us about either one. They call because the unit got loud, or because it ran all evening in November and the room never came up, or because it breathes out something faintly like a campfire for the first minute after it starts.
Alexandria Tip
Book it for spring, after the last fire of the season. A wheel cleaned in October goes straight into six months of woodsmoke; one cleaned in April stays clean through the cooling months, which in a wood-heat house is the only stretch when the mini-split is working on its own.
Why we take it apart instead of spraying it
There is no filter-and-spray option on our price list, and the reason is the crust. Coil cleaner sprayed through a louver slot hits the front face of the fin pack and runs back out. It does not reach a quarter inch deep into the pack, it does not reach the wheel behind the coil at all, and whatever it loosens has nowhere to go except your drain pan, where it settles into the same sludge we were hired to remove. So the unit comes apart. Plastic hung, electronics bagged, a catch bib sealed to the wall under the chassis — and because every property in Alexandria is on a private well and a private septic system, we carry water in and we carry the grey rinse water out with us. None of it goes down a drain here or onto the ground near a wellhead.
Then it is mechanical. Coil flushed front to back, pass after pass, until what is running into the bib stops coming off grey. Blower wheel out of the housing and scrubbed one vane at a time, because the curve of each vane is what moves your air and a filled-in curve is just a stick. Drain pan down to bare plastic. Condensate line flushed end to end. Outside, the compressor coil combed clear — up here that is pine needles, maple seed, and a surprising amount of whatever the wind brings off a hayfield.
Back together, we run it in heat, stand there, and feel what comes out of it before anything gets packed up. A wood-heated Alexandria house generally wants this every other year, not every year. If we get the cover off and the wheel is still clean, we will tell you it is a next-year job and go. We would rather say that than sell you a visit you did not need.
One indoor mini-split with its outdoor compressor is $199. Each additional indoor mini-split in the same house is $119, each additional outdoor compressor is $69, and $199 is the minimum for a visit. Condition is not a surcharge. A two-year-old unit in a propane-heated house and a ten-year-old one crusted with cordwood ash cost exactly the same, because it is the same teardown either way.
- Woodstove or pellet stove in the same room as the mini-split
- Faint campfire smell for the first minute after it kicks on
- Runs all evening in November and the room still reads cold
- Grey or tan film on the louvers, or a smudge on the wall above
- Louder than it was two winters ago at the same fan speed
- Oil or propane for backup, with the mini-split carrying the shoulder seasons
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Deep Cleaning Near Alexandria
Common Questions in Alexandria
We heat with oil, not wood. Do we still need a deep clean?
Usually yes, just on a longer interval. An oil-heated house still produces dust, pet hair, and cooking grease, and a mini-split running all summer on a damp coil collects all of it. The difference is what we find: a soft felt mat rather than a hard ash crust. Easier to remove, same effect on your airflow.
Can I vacuum the fins myself and skip the visit?
You can vacuum the filters and you should, every month it runs. The fin pack is a different thing. The dirt that matters sits between the fins and behind them, and a vacuum nozzle touching the front edge of the pack mostly just bends the aluminum. Bent fins block air permanently, which is the opposite of the goal.
How often should a wood-heated house in Alexandria have this done?
Every other year suits most of them. A stove going daily from October into April, with pets and a mini-split covering the shoulder months, can load up fast enough to want it annually. We check the wheel with a light and a mirror before quoting anything and tell you which of the two you have.
Do you come out to Shem Valley Road and the far corners of town?
All of it. Forty-three square miles at forty people to the square mile means the far corners are most of the town, so yes — South Alexandria, the Fowler River valley, up toward the Cardigan trailheads. We would much rather do several places on one road in a morning than drive out for a single unit.
Will cleaning it bring the heating bill down?
Some, probably, though we will not put a percentage on it, because it depends entirely on how bad the wheel was. What you notice immediately is output: more air out the bottom, the room coming up faster, and the unit cycling off in the evening instead of grinding away at it.
Need Mini-Split Deep Cleaning in Alexandria?
Per-mini-split prices you can see before you call, a bib-bag teardown that leaves nothing on your wall, and scheduling that fits a Lakes Region calendar.