No ductwork? No problem.
Mitsubishi Diamond Dealer, installing ductless mini-splits in Kingfisher since 2011. Shops, garages, additions and hot rooms.
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The rooms ductwork cannot reach
A mini-split is an outdoor heat pump and one or more indoor heads on the wall, ceiling or a recessed cassette, joined by a small refrigerant line through a 3-inch hole. Each head runs on its own. They cool in summer and heat in winter.
- Detached garage or shopMy most popular install. One 12,000 to 18,000 BTU head handles a 2-car shop.
- Bonus room or additionAdding ductwork is expensive and slow. A mini-split goes in a day.
- Hot or cold roomThe bedroom over the garage, a sunroom, a finished attic.
- House without ductworkOlder homes on floor or wall heat. Multi-zone heats and cools it all.
- Server room or shop officeYear-round precise temperature control.
- Casita or backyard officeSingle zone, often under $4,500.
- Wi-Fi controlsRun each head from your phone.
- Heat pump, both seasonsCooling and heat from the same unit.




One day for a single zone
- Outdoor unit setOn a pad or a wall bracket.
- Indoor heads mountedLocated for airflow, not just where it is easy to drill.
- Line set, drain and control wireThrough a 3-inch hole, run as clean as I can make it.
- Dedicated 240 volt circuitI do it or bring in an electrician, depending on the permit.
- Vacuum, charge and testMoisture pulled out, charged, tested in cooling and heating, then the remote and Wi-Fi walked through.



Why I push Mitsubishi for most installs
Mitsubishi Hyper-Heat units keep heating down to minus 13 F. Standard mini-splits drop off below about 17 F. Most Oklahoma days that does not matter, but when January hits single digits you want your shop still heating. I have Mitsubishi systems I installed in 2014 still running on original equipment.
Mitsubishi
Hyper-Heat to minus 13 F. Diamond Dealer installs qualify for a 12-year parts and compressor warranty.
Top tierMitsubishi ductlessDaikin
Quiet operation and strong dehumidification.
Mid to top tierFujitsu
A solid mid-tier option with a long parts and compressor warranty.
Mid tierPrice moves with BTU size, brand tier, head type (wall mount is least, ceiling cassette most), the distance to the outdoor unit, and electrical work. You get a flat written estimate before any work. Financing: Synchrony (up to 18 months at 0%), Wells Fargo, Wisetack, Klarna (4 interest-free payments over 6 weeks) and JB Financing (30+ lenders, scores as low as 590), subject to approval.
The numbers behind the work
What a mini-split actually is
A ductless mini-split has two parts: an outdoor heat pump condenser and one or more indoor air handlers mounted on the wall, the ceiling, or in a recessed cassette. They connect with a small refrigerant line through a 3-inch hole in the wall. No ductwork. Each indoor head has its own thermostat and runs on its own, and the whole system cools in summer and heats in winter, the same as a regular heat pump.
What happens at the free estimate
Every estimate is free. I come out, look at the space, measure for sizing, pick the best spots for the heads and the condenser, and check your electrical panel for available circuit capacity. Then you get a flat written quote. No deposit, no obligation.
Written by Dave Hartzell, owner of Hartzell’s Heat & Air. Mitsubishi Diamond Dealer, Oklahoma Master HVAC license, NATE certified, 47 years in the trade.
Straight answers
How much does mini-split installation cost in Kingfisher, Oklahoma?
A single zone runs $3,800 to $7,500 installed, most often $4,500 to $5,500 for a 12,000 to 18,000 BTU Mitsubishi. Two zones run $6,500 to $10,500, and a whole-house multi-zone $11,000 to $22,000. Estimates are free.
Will a mini-split heat my shop in winter?
Yes, if it is sized right and it is a Hyper-Heat model. Hyper-Heat works to minus 13 F. Standard mini-splits drop off below about 17 F. For a detached Kingfisher shop or garage, Hyper-Heat is what I recommend.
How big a mini-split do I need for my garage or shop?
Roughly 18,000 BTU for a 2-car detached shop, 24,000 BTU for a 3-car or insulated workshop, and 9,000 to 12,000 BTU for a single-car garage or small office. Insulation changes it a lot, so I do a load calc on every install.
How long does installation take?
Single zone: one day. Two zones: a day and a half. Whole-house 3 to 5 zones: 2 to 3 days.
Can a mini-split cool my whole house?
Yes. One outdoor unit driving 3 to 5 indoor heads can heat and cool a 1,500 to 2,500 square foot home, with a thermostat in every room. It costs more up front than central air, but there is no ductwork to build and you get room-by-room control.
Are there rebates on a mini-split?
Some Oklahoma utilities run rebates on qualifying mini-splits, and they change by program and date. Tell me your ZIP code and electric utility, and Dave or Shelby will check the current program before quoting an amount.
Tell me about the space
Shop, garage, addition or one room that never feels right. I will look at it, size it, find the best spot for the head and the outdoor unit, check your panel, and write a flat quote.
Call 405-375-4822Kingfisher, Hennessey, Okarche, Dover, Loyal, Cashion, Watonga and every town between. Counties: Kingfisher, Canadian, Oklahoma, Garfield, Major, Logan, Blaine.

