The first freeze warning of December reaches Oak Run, and a 1996 heat pump has to answer
Nearly every house in Ocala should be heated and cooled by a heat pump. This page walks through a typical case, from the night a couple's unit gives out to the first summer with its replacement.
A Tuesday freeze warning and a 28-year-old unit
The National Weather Service posts a freeze warning for inland Marion County on a Tuesday in mid-December. In a 1996 single-story in Oak Run, the original heat pump has been limping since October: it cools, but the heat strips have been carrying most of the load, and the Duke bill proved it. At 2 a.m. the outdoor fan stops. By 6 the house is 58 degrees.
The couple that owns it has lived there since the community was young. The system is the one that came with the house. They have had the capacitor done twice and a leak sealed once. This is the fork, and they know it.
What we told the couple in Oak Run
We measure the house, the ducts and the panel before suggesting anything. For a 1,650-square-foot slab home with a Florida room added in 2003, the honest answers were:
- A two-stage heat pump, not a straight-cool unit with strips. Oak Run sees the same seventeen or so freezing nights as the rest of the county; the heat pump’s heating advantage pays back the difference.
- A variable-speed air handler, because the real complaint in this house wasn’t temperature but the clammy feel in the afternoon. Longer, slower cycles fix that.
- A duct repair on the Florida room run, which was a flex line laid across the attic and crushed under a storage box.
- Surge protection at the disconnect, standard for us in the most lightning-struck county in the country’s most lightning-struck state.
- A hard-start kit skipped, because new compressors don’t need one.
We also mentioned the Duke Energy Florida program, which offers a rebate on qualifying heat pump replacements after a Home Energy Check. Whether Cook’s processes that rebate directly or the homeowner files it is something we confirm case by case. [[CONFIRM WITH JERRY]]
Thursday, 8:15 a.m.: the swap
The crew arrived at 8:15 on Thursday, two days later. The old refrigerant was recovered, the attic air handler came down through the hall scuttle in two pieces, and the new one went up in three. The line set was replaced rather than flushed, because the new refrigerant generation wants its own copper. The condenser pad was reset level; twenty-eight years of settling in Oak Run’s sandy soil had tilted the old one noticeably.
By 1:30 the system was under vacuum. By 3 it was charged and running in heating mode on a 50-degree afternoon. The thermostat was set up with the strips locked out above 35 degrees outdoor temperature, so the backup only runs when the heat pump genuinely needs help.
The first January and the first May
The first difference the couple noticed was the quiet. The second was the January bill, which was lower than the previous January’s even though the month was colder. By May the afternoons felt dry at 76, where the old unit had needed 72 to feel comfortable.
Living with a heat pump in Ocala means two tune-ups a year: one in late February before the pollen and the heat, one in October before the first cold snap. It means rinsing the outdoor coil after the oaks finish in May. It means a filter every month from June through September. And it means that on a January morning when the outdoor unit is covered in frost and steaming, that is the defrost cycle, not a failure.
Heat pump questions from the SR 200 corridor
The new unit runs for a long time on cold mornings. Is that wrong?
No. Variable-capacity heat pumps are designed to run long and slow. Short, hot blasts are the old behavior. If the house holds temperature and the strips aren’t running constantly, it is working as intended.
Our community has a pool heater and a clubhouse. Do you handle the commercial side too?
Yes. Cook’s installs and services commercial heat pumps and package units for clubhouses, fitness rooms and small offices. Pool heat pumps are a different appliance; we’ll tell you whether yours is one we service.
Should I set it to 'emergency heat' when it gets to 28?
Not unless the outdoor unit has failed. Emergency heat forces the strips on full-time and roughly triples the heating cost. The system calls for the strips on its own when it needs them.
How do I keep oak pollen off the new outdoor coil?
Rinse it gently with a hose from the inside out in late spring, and keep the azaleas and mulch at least two feet back. We clean it chemically at the spring tune-up, which is when the February-to-May pollen load has done its damage.
Heat pump running on borrowed time?
Free replacement estimate, any week of the year.