LicenceOH HVAC HV.48219 · EPA 608 · $2M insured

Emergencies24-hour line — (614) 555-0177

Corbin & MarshHeating · Cooling · Columbus, Ohio
(614) 555-0177 Get a quote

Columbus, Ohio · Since 1968

Heat in January.
Cool in July.

Corbin & Marsh runs two trades on one crew: furnaces and boilers when the Ohio winter bites, central air and heat pumps when the asphalt melts. Nine vans out of Clintonville, 3,412 verified reviews, and a live technician on the 24-hour line.

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Get a quote Call (614) 555-0177
  • CrewFourteen NATE-certified techs, all on payroll. We never subcontract a service call.
  • PricingThe diagnostic is $89 flat and credited to the repair. Quotes are written before tools open.
  • FleetNine vans stocked with 1,600 parts — 87% of jobs finish on the first visit.
Terracotta cast-iron radiator against a plaster wall in warm afternoon light Heat
White wall vent throwing a hard diagonal shadow in cool daylight Cool
WO-4471 A boiler swap in Clintonville and a condenser set in Upper Arlington — both handed over the same week in March.

The board, 9:40 a.m.Seven vans on the road

Next openingTomorrow, 8:20 a.m.

24-hr lineAnswered by a technician, never a menu

Certified, licensed, insuredRe-checked March 2026

  • NATE certified

    14 technicians, re-tested every 2 years

  • EPA 608 Universal

    Refrigerant handling, all four types

  • BBB A+ accredited

    Zero unresolved complaints since 1994

  • Licensed & bonded

    OH HV.48219 · $2M general liability

  • 4.9 on Google

    2,187 reviews, response time under 3 days

  • Factory trained

    Six manufacturers, warranty-authorised

Licence and insurance numbers are printed on every invoice. Ask the technician for the current certificate — it rides in glovebox three of every van.

Two trades

One crew, both
seasons.

The same office answers for January and July. Pick the season below — the other one stays right where it is.

A hand turning the dial on a radiator thermostatic valve Heating

Furnaces, boilers & heat pumps

  • Furnace repair & tune-ups

    Igniters, boards, blowers — and the $89 diagnostic credited to the fix.

    from $129

  • Boiler & radiator service

    Hot-water and steam systems, zone valves, airlocks, radiator balancing.

    from $168

  • Heat pump installs

    Cold-climate units sized by Manual J — no rule-of-thumb tonnage here.

    from $112

  • Radiant & garage heat

    In-floor loops, shop unit-heaters and the thermostat nobody can find.

    from $145

Winter promise: no house we serve goes below 55° overnight — the emergency line runs around the clock.

Blue-tinted spiral ductwork branching across an industrial ceiling Cooling

Central air, mini-splits & air quality

  • AC repair & tune-ups

    Capacitors, contactors, coils and refrigerant — measured, not guessed.

    from $129

  • Ductless mini-splits

    Single-room to five-zone, wall and ceiling cassettes, same-week installs.

    from $96

  • Air handlers & coils

    Blower motors, ERV/HRV service and the duct sealing everyone skips.

    from $138

  • Indoor air quality

    Media filtration, humidity control and UV for the August mould months.

    from $89

Summer promise: from June 15 every van carries a spare capacitor kit — the part that fails on the hottest Tuesday.

The index

What we install,
by the numbers.

Six system families we stock parts for — not a lead form that forwards to whoever bids first. Sizes below are the typical Columbus range; a Manual J load calculation sets the final spec.

Trade System family Spec, typical range Installed from
Heat Gas furnace · single-stage 96% AFUE · 40–120k BTU · ECM blower $4,480
Heat Gas furnace · modulating 98% AFUE · variable-speed · 10-yr parts $6,900
Heat Boiler · cast-iron hot water 85% AFUE · 70–175 MBH · zoned pumps $7,250
Cool Central AC · single-stage 16 SEER2 · R-410A · 2–5 tons $5,150
Cool Heat pump · cold-climate 18.5 SEER2 · 10 HSPF2 · balanced to 5°F $8,400
Cool Ductless mini-split · 3-zone 22 SEER2 · wall cassettes · 9–12k heads $6,700
Rooftop exhaust fan and condenser unit above a brick parapet under a grey sky
RO-1188 A Grandview Heights rooftop: make-up air unit and condenser set above the parapet, photographed at handover in October.

The visit

Four steps,
no surprises.

The routine has not changed since 1968; only what the vans carry has. Every step ends with a number written down, not a verbal shrug.

  1. 01

    The call

    Two minutes

    A technician answers — the same one who will knock on your door. You get a two-hour window, not a vague afternoon, and a text when the van leaves Indianola Avenue.

  2. 02

    The look

    30–60 minutes

    Shoe covers on, meter out. The tech photographs what they find, shows you the readings, and writes the price on a sheet before a single tool opens.

  3. 03

    The fix

    Same visit, 87%

    Vans carry 1,600 parts, so most repairs finish on the spot, at the number on the sheet. What cannot finish today gets tomorrow's first slot.

  4. 04

    The check

    Twelve months later

    On any install we call you at the one-year mark. Warranty claims are handled by the office — the same voice that booked the job.

A technician's hands cutting copper pipe in a bench vise
Bench 3 Copper set-up for a zone-valve manifold — fabricated in the shop, not improvised in your basement.

The record

3,412 reviews,
counted honestly.

We publish the whole distribution — the bad months too. Every quote below is verbatim from its platform listing; we never edit, filter or incentivize.

4.9/ 5 average

3,412 verified reviews across three platforms

  • GGoogle2,187 · 4.9
  • YYelp743 · 4.7
  • BBBB482 · 4.8 · A+

How the 3,412 break down

5★91%
4★6.4%
3★1.8%
2★0.5%
1★0.3%

Reviews per year, 2016–2026

G5★Dana R. · Clintonville · Feb 2026

“Furnace died on the coldest night of February. Tech arrived inside the window, had the board replaced by lunch, and the invoice matched the quote to the dollar.”

Y5★Marcus T. · Upper Arlington · Jul 2025

“They talked me out of a bigger AC than I needed. The Manual J said 2.5 tons, they installed 2.5 tons, and my August bill dropped sixty dollars.”

G5★The Ostrowskis · Bexley · Nov 2025

“Boiler service the way my grandfather's plumber used to do it — shoe covers, photos of what they found, and a follow-up call in December.”

B4★Priya S. · Westerville · May 2026

“Fourth summer on the maintenance plan: two tune-ups a year, priority slots, never waited more than a day. Only knock — the text reminders are frequent.”

G5★Elaine W. · Grandview Heights · Mar 2025

“A second opinion saved us $3,200. The other company wanted a whole new compressor; Corbin & Marsh swapped a capacitor and it has run two seasons since.”

Y5★Jon & Kayla M. · Worthington · Oct 2026

“Heat pump install took two days, not the week the first bidder promised. They walked us through the thermostat and filed the utility rebate for us.”

Get a quote

Tell us which
season is hurting.

Dispatch reads every request the same day. A technician — not a call centre — calls you back with a two-hour window, usually inside twenty minutes during working hours.

No heat or no cooling right now? Skip the form: the 24-hour line is answered around the clock.

Nate CorbinThird generation · 4120 Indianola Avenue, Columbus

How urgent is it?

No mailing lists, no door-knockers. Your details stay with the office on Indianola Avenue, like they have since 1968.

24-hr line (614) 555-0177 Quote
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