From 1950s homes in original downtown to rural acreage properties with propane heat — we've worked on every type of system Collinsville has. We know what breaks here, why it breaks, and how to fix it right the first time.
Open Mon–Fri 8am–7pm, Sat 8am–5pm
Local HVAC Intel
Collinsville is a community of about 7,000 people north of Owasso — a mix of original small-town homes, mid-era growth housing, and newer construction catching Owasso's spillover. Rural properties on well water and propane make this area unique compared to the rest of the Tulsa metro. Here's what we see on service calls.
7K+
Residents
1950s–Now
Housing Stock Range
12–20 yr
Avg System Age We See
~25 min
From Our Shop
Collinsville's oldest homes are from the 1950s and 1960s — small, well-built original town properties near downtown and Main Street. A moderate growth period in the 1980s through 2000s added standard suburban housing. The newest growth is happening on the east and south sides, where families are choosing Collinsville for more land and space while staying close to Owasso's amenities.
What sets Collinsville apart: a significant number of properties outside city limits are on well water and use propane for heat instead of natural gas. This creates HVAC challenges you won't find in most Tulsa suburbs.
1950s–1970s Homes (Original Collinsville, Downtown, Main Street)
Small-town originals, 1,000–1,500 sq ft. Basic gas furnace systems. Some still have window units or very old ductwork. These are the oldest systems we encounter in Collinsville and many are well overdue for full replacement.
1980s–2000s Homes (Central Collinsville, School District Area)
Standard split systems, 1,400–2,200 sq ft. Systems are in the 20–40 year range — many have been repaired multiple times. This is prime replacement territory. Ductwork is generally adequate but aging.
2010s–Present (East Side, South Side, New Subdivisions)
Newer construction catching Owasso's growth wave. 14–16 SEER systems. Many families moving from Owasso for more land. These homes are newer but open-field dust and cottonwood hit condensers hard.
Based on our actual service calls in Collinsville, here's the breakdown of what we typically see:
Most common throughout Collinsville. Includes some propane-fired furnaces on rural properties — a key difference from most of the Tulsa metro.
More common here than in suburban Tulsa. Particularly on older properties and manufactured homes. Parts for older models can be hard to find.
Primarily in newer construction on the east and south sides. Growing but still less common than in Owasso or Broken Arrow.
Ideal for rural Collinsville properties with propane backup. Heat pump handles mild weather; propane furnace covers deep freezes.
Not sure what you have?
That's completely normal — most homeowners don't know their system type, age, or fuel source. We'll identify everything during our diagnostic visit and explain your options in plain English.
What We See Every Week
These aren't generic HVAC issues — these are the specific problems our technicians diagnose and fix in Collinsville homes and rural properties every single week.
Some original Collinsville homes near downtown still have equipment from the 1980s or even older. These systems are well past their design life — they may still run, but they're inefficient and one major repair away from being unserviceable. We're often the first HVAC company some of these homeowners have called in decades.
Our fix: Honest system evaluation with clear options — repair, extend with targeted maintenance, or replace. We'll show you what each path costs over time.
Package units — where all components live in one cabinet on a pad or rooftop — are more common in Collinsville than in most of the Tulsa metro. They're simpler in some ways, but older models are hard to source parts for. When they fail, replacement is often the only practical option. We stock parts for the most common brands and can source specialty components.
Our fix: We carry parts for the most common package unit brands. When repair isn't viable, we size and install replacement units quickly — often same week.
Many Collinsville properties outside city limits are on well water — and well water in this area is hard, with high mineral content. We see mineral deposits clogging condensate drain lines, corroding evaporator coil drain pans, and causing premature system failures. This is a uniquely rural problem that most HVAC companies in the Tulsa metro rarely encounter.
Our fix: We clean condensate systems, treat drain lines, and install condensate safety switches during every tune-up on well-water properties.
Homes outside Collinsville city limits often use propane instead of natural gas — and propane furnaces have different burner configurations, pressure requirements, and service needs than gas furnaces. Many HVAC companies don't service propane properly. We do. We've worked on propane systems across the north Tulsa area for decades and understand the nuances.
Our fix: We're experienced with propane furnace repair, conversion, and replacement. We work directly with your propane supplier to coordinate safely.
Collinsville is surrounded by open fields and pastureland. Cottonwood season (May–June) and year-round agricultural dust are brutal on outdoor condenser coils. We see Collinsville condensers packed far worse than comparable suburban units — because there are no windbreaks between the open land and the equipment. Reduced airflow leads to compressor failure fast.
Our fix: Annual spring condenser cleaning is essential in Collinsville. Our maintenance plans include it automatically — no guessing, no skipping.
Collinsville and the surrounding rural areas have a higher proportion of manufactured and mobile homes than most of the Tulsa metro. These homes have unique HVAC requirements: downflow furnaces, smaller ductwork, and specific installation constraints. Most HVAC companies don't stock the right equipment or know the code requirements for manufactured housing.
Our fix: We have experience with manufactured home HVAC — the right equipment, the right sizing, and full code compliance. We won't send a tech who's unfamiliar with your situation.
Neighborhood by Neighborhood
Collinsville spans everything from original small-town homes to rural acreage properties. Here's what our techs find in the areas we service most frequently.
Built 1950s–1970s
Original small-town homes with the oldest HVAC systems we encounter in the area. Some haven't been replaced since the 1980s. We frequently find equipment that's technically still running but completely inefficient and unsafely aging. Major replacement territory.
Most Common Call
Full system replacement
Built 1980s–2000s
Mid-era suburban growth. Standard split systems now in the 20–40 year range. These homeowners have often repaired systems multiple times and are evaluating when the right time to replace is. We see a lot of aging Lennox and Carrier units here.
Most Common Call
Repair vs. replace evaluation
Built 2010s–Present
Newer construction with builder-grade 14–16 SEER systems. Many families moving from Owasso for more space. Systems are newer but annual maintenance is critical — open fields to the east make cottonwood and dust issues worse than they expect.
Most Common Call
First maintenance / coil cleaning
Mixed eras, acreage properties
Acreage properties with propane heat and well water — a combination that creates unique HVAC challenges. Propane furnace issues, mineral buildup on coils and condensate systems, and package units on rural pads are all common. These calls take more preparation and expertise.
Most Common Call
Furnace repair / propane issues
Built 2000s–Present
Growth spillover from Owasso means newer homes with better systems. More city amenities, natural gas available, standard suburban HVAC. These homeowners often compare us against Owasso-based companies — and we win on service every time.
Most Common Call
Heat pump service / maintenance
Mixed eras
A real mix of older ranch homes and some newer builds strung along the highway corridor. Older homes have original ductwork that's undersized and leaky. Newer builds have standard modern systems but need maintenance. Every service call here is a bit different.
Most Common Call
Ductwork inspection / repair
Don't see your area? We service all of Collinsville and surrounding rural properties.
Tell Us Your Address — We'll Tell You What to ExpectOklahoma's Wild Weather
Collinsville's open rural setting means weather hits harder here. Fields with no windbreaks, direct exposure to Oklahoma storms, and the unique demands of propane and well-water systems all add up. Here's what we see each season.
March – May
Cottonwood and open-field dust are extremely heavy in Collinsville — often worse than in suburban Tulsa. Condensers get packed fast. We also find winter damage on propane furnace systems and condensate issues from well water mineral buildup during the wet season.
Critical time for condenser cleaning in Collinsville.
June – September
100°F+ days stress every system, but older Collinsville systems are especially vulnerable. Package units on rural properties struggle in extreme heat without proper maintenance. Cottonwood-clogged condensers from spring compound the problem — systems that limped through the season fail in July.
Don't wait for failure — if it's struggling, call early.
October – November
Ideal time to have your propane furnace inspected before you need it. We check burners, heat exchangers, gas pressure, and ignition systems. For older downtown Collinsville homes, fall is when we often find cracked heat exchangers — a safety issue that can't wait until January.
Schedule your heating tune-up in October.
December – February
Ice storms and sub-20°F temperatures hit rural Collinsville hard. Propane furnaces are especially vulnerable when supply runs low mid-storm. Condensate lines freeze on older systems. We get emergency calls from Collinsville every hard freeze — we're ready for them.
Emergency service available — we don't close for cold.
What We Do
Repair, installation, and tune-ups for all brands and system types including package units common in rural Collinsville.
Gas and propane furnace repair, heat pump service, and emergency heating — including rural properties on propane.
Whole-home purification and filtration — especially valuable in Collinsville where agricultural dust and cottonwood are constant challenges.
EcoNet, Nest, Honeywell, and Ecobee installation. Proper wiring matters — a bad install wastes money.
Why Dowd
Our shop at 7666 E 46th Pl is up Highway 169 / US-75 through Owasso. We make the drive to Collinsville regularly — it's not an afterthought service area for us.
No surprise invoices. We diagnose, explain what we found, and give you a price. You approve it or you don't. That's it.
We've been family-owned since 1995. When you call, you get a real person. When we come out, you see the same familiar faces.
Propane furnaces, well water systems, package units, manufactured homes — we know them all. Not every HVAC company does. We won't send a tech who isn't prepared for what your property needs.
Through our partner Upgrade, you can finance a new system with payments that often cost less than what you're losing in efficiency on an old one.
"We have called out bigger companies that wanted us to replace everything for commission. Dowd has been able to fix my AC and heater without replacing them. I will only use them."
— Bailea F., Verified Google Review
Collinsville HVAC Questions
Absolutely. We service propane furnaces throughout the north Tulsa area. Propane systems require specific burner configurations, orifice sizes, and pressure settings that differ from natural gas. We have the training and equipment to handle them correctly. If you need a replacement, we can install propane-compatible furnaces and coordinate with your propane supplier for the gas work. We'll never send a tech who isn't prepared for your specific system.
Yes, and it's a bigger problem than most homeowners realize. Hard well water has high mineral content — calcium and magnesium primarily. When your system generates condensation (which all AC and heat pump systems do), that condensate sits in the drain pan and flows through condensate lines. With hard well water, minerals build up in those lines and pans, causing clogs, corrosion, and eventually water damage. We treat and clear condensate systems on every tune-up visit at Collinsville properties on well water, and we can install condensate safety switches that shut the system down before water damage occurs.
That's a smart question and the answer depends on your plans for the property. If you're staying, a new system pays for itself quickly in comfort and energy savings — older systems often cost $200–$400/month more to run than a new high-efficiency unit. If you're planning to sell, a new HVAC system is one of the top factors buyers check and can meaningfully increase your sale price and eliminate negotiation points. We can walk you through the numbers for both scenarios so you can make the call that's right for you. No pressure.
Proper sizing requires a Manual J load calculation — a process that accounts for your home's square footage, insulation levels, window placement, ceiling height, local climate data, and other factors. Many contractors still use the outdated rule of thumb of "1 ton per 500 sq ft" which regularly results in oversized or undersized systems. Collinsville homes — especially older ones with original insulation and rural properties with exposure to wind — need careful sizing. We perform proper load calculations on all new system quotes.
Our shop at 7666 E 46th Pl in Tulsa is about 25 minutes from most of Collinsville via Highway 169 / US-75 north through Owasso. We have trucks in the north Tulsa area every day, and for same-day service calls we can typically be there within a few hours. For emergencies — no heat in winter, no AC in summer, especially with kids or elderly family members — we prioritize and get there as quickly as possible.
Yes. Manufactured homes require specific HVAC equipment — typically downflow furnaces, smaller duct runs, and systems designed for the structural constraints of HUD-code construction. Many contractors won't touch them or don't have the right equipment. We service and replace HVAC in manufactured homes throughout the Collinsville area. We'll assess your setup correctly from the start so we're not ordering the wrong equipment or making your situation worse.
Nearby Communities
Tell us your address and what's going on — including whether you're on propane or well water. We'll tell you what to expect before we even come out. No runaround, no sales pitch. Just honest answers from a team that's been doing this for 30 years.
Call Us Directly
(918) 437-3721Email Us
abigail@dowdheatandair.comOur Shop
7666 E 46th Pl, Tulsa, OK 74145
~25 min from Collinsville via Highway 169 / US-75
Hours
Mon–Fri: 8am–7pm | Sat: 8am–5pm
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