Dover, Kingfisher County. Rural acreage and farm community north of Kingfisher. Geothermal works extremely well here on the open lots. I service all of rural Kingfisher County, Dover is a 15-minute drive from the shop.
Hartzell’s Heat & Air has completed 44 HVAC jobs in Dover (73734). 37 new installs, 0 geothermal projects, 4 AC service calls. Master HVAC license, NATE certified. Call 405-375-4822 or book online.
Recent Dover projects
Hartzell’s Heat & Air has completed 44 HVAC jobs in Dover (73734) over the last 24 months. 37 new installs, 0 geothermal projects, 1 rated job. I’m Dave Hartzell. 47 years on tools, Master HVAC license, NATE certified. Call 405-375-4822.
Dover (73734) on the Map
2026 Repair Reality (Honest Pricing)
- R-454B and R-32 refrigerants now standard on new equipment. Both are mildly flammable A2L. R-454B recovery $445, R-32 recovery $395. About 50% pricier per pound than R-410A. I stock both.
- Hard Start Kit $415 installed + BEST surge protection bundle $1,225 (control board spike + transformer + in-line fuse). One $1,225 surge fix beats one $3,195 compressor replacement after Oklahoma lightning.
- Free second opinion on any repair quote. Most competitors charge or refuse. Weekday mornings, repair customers welcome. Call 405-375-4822.
New HVAC Install in Dover
“Brand new system acting up right after install, got it sorted under warranty”
Warranty service call on new HVAC install, Dover OK, spring, covered under manufacturer warranty at no charge
AC Service in Dover
“Fan stopped spinning on our fall AC unit”
Blower motor replacement, Dover OK fall HVAC maintenance and repair service
AC Service in Dover
“AC wasn’t keeping up with the heat”
Fall air conditioning diagnosis and repair in Dover, Blaine County, Oklahoma
New HVAC Install in Dover
“Old system finally gave out, needed a whole new unit put in”
Installed Trane 5YCC 4-ton gas electric packaged unit 14.3 SEER2 80% AFUE with TCONT724 Wi-Fi thermostat Dover OK fall
AC Service in Dover
New HVAC Install in Dover
“AC kept shutting off every few minutes and wasn’t cooling right”
Replaced faulty high pressure switch, added 1 lb R-410A refrigerant, restored cooling on residential AC unit in Dover summer service call
New HVAC Install in Dover
“AC running but barely keeping up, compressor on its way out”
Cleaned evaporator coil, replaced 7.5 MFD capacitor, diagnosed failing compressor on 2-ton Bard unit, Dover OK summer service call
New HVAC Install in Dover
“Technician came out to check what was wrong with the system”
Winter HVAC service call and diagnostic assessment in Dover, refrigerant evaluation performed
New HVAC Install in Dover
“Service call to Dover in summer”
HVAC service dispatch and truck fee Dover Oklahoma summer maintenance call
New HVAC Install in Dover
“AC fan stopped working and high-pressure switch kept shutting unit off”
Replaced 1075 RPM 1/3hp condenser fan motor and high-pressure switch, Dover spring AC repair
New HVAC Install in Dover
“Got charged for the service call to come look at the system”
HVAC service dispatch and truck fee in Dover spring, professional technician evaluation
New HVAC Install in Dover
“Air conditioning broke down and we needed to figure out what’s wrong”
AC diagnostic and assessment service in Dover during summer, all brands evaluated
New HVAC Install in Dover
“Need to figure out what’s wrong with the AC”
Residential HVAC diagnostic service in Dover summer, all brands and systems evaluated
New HVAC Install in Dover
“AC system stopped working and we needed to figure out what’s wrong”
Residential HVAC diagnostic service Dover summer, expert technician inspected air conditioning system
New HVAC Install in Dover
“Need to find out what’s wrong with my AC or heater”
Residential HVAC diagnostic service Dover spring, all major brands inspected and assessed
New HVAC Install in Dover
“Breaker box was open with loose wires, no power getting to the unit”
Dover spring HVAC inspection found open electrical breaker box requiring electrician service before unit could be tested or repaired
New HVAC Install in Dover
“Need to find out what’s wrong with our heating or cooling system”
HVAC diagnostic service Dover spring, all brands air conditioning heating systems inspected
New HVAC Install in Dover
“Needed someone to figure out what’s wrong with our heating system”
Fall HVAC diagnostic service Dover, comprehensive system inspection with written repair recommendations and energy efficiency assessment
New HVAC Install in Dover
“Furnace wasn’t firing right, we cleaned the sensor and got it working”
Flame sensor cleaning and fall preventative maintenance inspection Dover OK, furnace system tested and cycled
Duct & IAQ in Dover
“Fan motor making whining noise, bearings getting loose”
Dover summer heating system inspection, fan motor bearings loose, recommended replacement next year, system functioning properly
Duct & IAQ in Dover
“Air conditioning system needed a full diagnostic checkup”
Residential AC diagnostic service Dover summer, all brands serviced, repair recommendations provided
New HVAC Install in Dover
“AC system needs looking at”
Residential air conditioning diagnostic service Dover summer, all brands serviced with written repair recommendations
New HVAC Install in Dover
“AC wasn’t cooling right, we came back and fixed it”
Dover summer AC diagnostic and repair, R410A refrigerant recharge, system operation verified
New HVAC Install in Dover
“AC wasn’t working right, came back to fix it”
Return trip HVAC repair Dover summer, diagnostic and parts installation with system operation verification
New HVAC Install in Dover
“We came out and figured out what’s wrong with your AC system”
Air conditioning diagnostic service Dover summer, all brands serviced, written repair recommendations and energy saving assessment
New HVAC Install in Dover
“Business HVAC system needed a full diagnostic to figure out what’s wrong”
Commercial HVAC diagnostic service Dover spring, licensed technician identified system failure and repair recommendations
AC Service in Dover
“Spring AC checkup, everything’s running great”
Preventive maintenance inspection Dover spring, condenser cleaned and tested, system operating normally
New HVAC Install in Dover
“Furnace isn’t putting out any heat this winter”
Winter heating diagnostic Dover OK. Furnace inspection and system analysis. Repair recommendations provided.
New HVAC Install in Dover
“Blower motor clogged with dirt, wouldn’t push air through the house”
Winter heating diagnostic Dover OK. Cleaned blower motor and coil assembly impacted with dirt buildup, restored airflow to furnace system.
New HVAC Install in Dover
“We came back to install the parts and get your system running again”
Return trip diagnostic and repair in Dover spring. Installed replacement parts, tested HVAC system operation
New HVAC Install in Dover
“Furnace won’t heat up, need to know what’s wrong”
Spring furnace diagnostic and troubleshooting in Dover. Gas heating system inspection, draft assessment, and written repair recommendations provided.
New HVAC Install in Dover
“Condensing unit wasn’t cooling right, needed a replacement”
Guardian 407c condensing unit replacement, Dover summer AC repair, full system diagnostic and installation
New HVAC Install in Dover
“AC not cooling down in summer heat”
Residential HVAC diagnostic service Dover summer, no cooling, full system analysis and repair recommendations
Duct & IAQ in Dover
“We checked your AC system and found what needs fixing”
Residential HVAC diagnostic in Dover summer. Full system analysis, written repair recommendations, energy efficiency assessment
New HVAC Install in Dover
“Furnace wasn’t producing any heat when we needed it”
Spring HVAC diagnostic in Dover – no heat troubleshooting, system analysis, repair recommendations provided
New HVAC Install in Dover
“Furnace isn’t putting out any heat this winter”
Winter HVAC diagnostic in Dover OK – residential heating system troubleshooting, inspection, and written repair recommendations
New HVAC Install in Dover
“Commercial AC stopped cooling, we found bad motor and capacitor”
Dover summer commercial HVAC service call, replaced condenser fan motor and run capacitor, system replacement recommended
New HVAC Install in Dover
“AC stopped cooling in the middle of summer”
Dover summer AC repair: replaced condenser fan motor and dual run capacitor, restored cooling operation
New HVAC Install in Dover
“AC wasn’t cooling right, found the condenser fan motor was burnt up”
Replaced condenser fan motor 1/4-1/2 hp 115/230V and capacitor, spring AC service Dover
New HVAC Install in Dover
“Thermostat quit working, heater wouldn’t respond to temperature changes”
Dover spring HVAC service: replaced faulty TCONT200 thermostat, restored heating system operation
New HVAC Install in Dover
“Thermostat wasn’t controlling the heat right, replaced it and got things working”
Dover winter HVAC service call: faulty thermostat diagnosed and replaced with TCONT200 1H/1C 4-wire unit, system operation verified
New HVAC Install in Dover
“AC kept shutting off randomly, wouldn’t stay running right”
Dover fall AC service call: faulty control board replaced, combustion safety switch diagnosed and repaired
New HVAC Install in Dover
“AC keeps freezing up and won’t cool right”
AC system freeze-up diagnosis Dover summer, poor installation found, ductwork insulation issues identified
New HVAC Install in Dover
“Water pooling inside, AC draining where it shouldn’t”
Dover summer AC tune-up: cleared clogged drain line, cleaned condenser coils, diagnosed shorted compressor requiring replacement
Why folks in Dover call me
I run my routes out of Kingfisher, and Dover is a regular stop. Most of my Dover customers found me by referral. I keep my truck stocked with the parts that fail most often in Oklahoma weather, so when I roll up I usually have what I need to fix the system the same day.
I quote everything in writing before the work starts. No “you need this” pressure, no equipment swaps you did not ask for. Just diagnosis, fix, written invoice. Call 405-375-4822 or book online at hartzellsheatair.com.
Common questions from Dover (73734)
How much does an AC repair cost in Dover?
A residential service call is $210 flat: $99 dispatch plus $111 diagnostic. The $111 diagnostic is not credited toward the repair. If I leave a written repair estimate and you accept it within 10 days, I give the $99 dispatch fee back. Most Dover repairs land between $200 and $850 all-in. Refrigerant work, blower motor failures, and capacitor swaps are the most common categories I see in this ZIP.
Do you offer same-day service in Dover?
Most days yes. If you call before noon and the job is straightforward (no-cool, no-heat, leak), I can usually be at your house in Dover that same afternoon. Heavy install days or extreme-weather backlog can push it to next-day, but I always tell you up front when you call.
What does a new HVAC install in Dover run?
A complete 3-ton air-source heat pump installed (heat pump + air handler + thermostat + permits) runs about $10,000 to $14,000 in Dover, depending on equipment tier and ductwork condition. OG&E rebates up to $3,000 stack on top. Geothermal is a different conversation, that is $25,000 to $36,000 range before rebates. I write a free estimate either way.
Do you service all brands in Dover?
Yes. Master HVAC license, NATE certified, 47 years on tools. I install Trane, Mitsubishi, Amana, ClimateMaster (geo), RunTru. I service whatever brand is sitting on your slab. If it has a refrigerant cycle and ductwork, I can work on it.
Recent services for Dover (73734) customers: AC diagnosis and repair, furnace not heating, capacitor replacement, blower motor swap, refrigerant top-off, thermostat upgrade, ductwork sealing, full system replacement, geothermal installation, indoor air quality (UV + media filtration), water heater install and replacement, dehumidifier installation, electrical panel coordination for heat pump upgrades.
Nearby Service Areas
Need HVAC Help in Dover?
Call 405-375-4822 or book online. Same-day appointments available across Central Oklahoma.