Questions, answered straight

Twice a year: a cooling tune-up in spring before the first heat wave, and a heating tune-up in fall before the first freeze. That cadence catches worn parts while they're cheap, keeps efficiency from drifting down, and satisfies the documented-maintenance requirement most manufacturers attach to their parts warranties. If you only do one, prioritize the season your system works hardest — in central Ohio, that's honestly a coin flip.

With regular maintenance: 15–20 years for a gas furnace, 12–17 for a central AC, and 12–15 for a heat pump (it works year-round, so it accumulates hours faster). Neglected systems commonly die 5 years earlier. Past those ranges, repairs get more frequent and efficiency lags modern equipment enough that replacement often pays for part of itself in utility savings.

Our emergency line is answered 24/7 by a live dispatcher, and a technician calls you back within minutes for triage. During normal weather we typically arrive within 2–4 hours; during extreme cold snaps and heat waves we prioritize no-heat and no-cooling homes — especially those with infants, elderly residents, or medical equipment — and Comfort Club members get front-of-line dispatch.

Our rule of thumb is the "$5,000 rule": multiply the repair cost by the system's age — if it tops $5,000 (say, a $500 repair on a 12-year-old unit), replacement usually deserves a serious look. We always quote the repair honestly and, when the math is close, show the replacement price beside it with real operating-cost estimates so you can decide with numbers instead of pressure.

Every plan includes scheduled seasonal tune-ups (one on Essential, both AC and furnace on Comfort and Total Care), a repair discount (10–15% depending on tier), and priority scheduling ahead of non-members. Comfort adds a waived diagnostic fee; Total Care adds waived after-hours fees, an annual ductwork inspection, and extended-warranty support. Plans are month-to-month or annual — no multi-year contracts.

For most homes, yes. The Comfort plan costs less per year than two à-la-carte tune-ups, so the repair discount, waived diagnostic fee, and priority scheduling ride along free. Add the quieter savings — parts caught before they take out a compressor, warranty claims that stay valid because maintenance is documented, and 5–15% efficiency recovered by clean coils — and the plan usually wins the math the first time you use it.

Any time. Monthly plans cancel at the end of the billing month; annual plans can be refunded pro-rata minus the standard price of any tune-ups already performed. Upgrades (say, Essential to Comfort) take effect immediately. No cancellation fees, no phone-tree hostage negotiation — it's in the plan terms in writing.

Each plan covers one complete heating-and-cooling system. Homes with two systems (common in larger two-stories) add the second at a discounted rate, and landlords can enroll multiple properties under one account with per-property paperwork — several of our members are landlords who like that tenants can call us directly while the owner just gets the report.

In the Columbus market, most standard-efficiency AC replacements land in the $6,000–$9,000 range installed, gas furnaces $5,500–$8,500, and full system replacements (furnace + AC or a heat pump system) roughly $12,000–$18,000 depending on size and efficiency tier. Every Thermaline quote is flat-rate and written — the number you approve is the number on the invoice, including permits and haul-away.

We offer plans through our third-party lending partners — typically 0% APR promotional periods for shorter terms and fixed-rate plans up to 84 months for longer ones. Applying takes about ten minutes with a soft initial credit pull, and approval usually comes back the same visit. A $12,000 system on an 84-month fixed-rate plan runs roughly $190–$230/month depending on rate — use the calculator on our financing page for your numbers.

Most rebates for high-efficiency equipment come from local utility programs ($200–$1,500 on qualifying systems), manufacturer seasonal promotions ($100–$500), and periodic state efficiency programs. Which ones apply depends on the specific model's ratings and your utility. We identify what your chosen system qualifies for before you sign, and we file the utility paperwork for you — you just cash the check. Rebate availability varies by location and utility provider.

It means you approve a fixed written price for the diagnosed job before any work starts — not an hourly rate that grows while the tech hunts, and not a teaser price that sprouts line items. If the job turns out harder than diagnosed, that's our risk, not yours. The only way the price changes is if you approve additional work we discover and document (with photos) along the way.

SEER2 (Seasonal Energy Efficiency Ratio 2) measures cooling efficiency under a 2023 federal test standard that better reflects real ductwork conditions — higher is more efficient. The federal minimum for new units in Ohio is 13.4 SEER2; mid-tier equipment runs 15–16, and high-efficiency units reach 18+. Around 15–16 SEER2 is the sweet spot for most Columbus homes; going higher pays off mainly with heavy AC use, utility rebates, or a planned long stay in the house.

Both work well here, and the honest answer depends on your gas availability, electric rates, and how long you'll own the home. Modern cold-climate heat pumps heat efficiently well below freezing and give you AC in the same box; gas furnaces still win on raw output during deep cold snaps. Many of our best installs are dual-fuel: a heat pump carries the season, and a gas furnace takes over below its balance point. We'll run the comparison with your actual utility rates.

Manual J is the industry-standard method for calculating exactly how much heating and cooling your specific house needs, using its measurements, insulation, windows, and orientation — instead of guessing from square footage or copying the old unit's size. It matters because oversized systems short-cycle, dehumidify poorly, and wear out early, while undersized ones never keep up. We run one before every replacement quote; if a contractor sizes your system off the old nameplate, ask why.

Yes — ductless mini-splits were built for exactly this. One outdoor unit feeds up to five compact indoor heads, each cooling and heating its own zone with its own remote, with no ducts to run and no plaster to tear open. They're the standard answer for Columbus's older radiator-heated homes, additions, finished attics, and bonus rooms. Efficiency is excellent because there are no duct losses at all.