Every product Smith Brothers installs is selected for one reason: reliable performance in Oklahoma's specific climate. That means systems rated for 105°F heat domes, furnaces with enough AFUE efficiency to offset ONG costs, and IAQ products that address Cedar Fever and Red Dirt year-round.
We carry Trane, Lennox, Carrier, and Rheem: and we will tell you honestly which brand and model fits your home, not which one carries the highest margin.
We do not install every brand available. We install the four brands that have consistently performed well in Oklahoma's specific climate over our 25 years of service.
Trane's reputation for reliability in extreme climates is well-earned. The XV and XR series outperform most competitors at sustained 105°F operating conditions: the standard OKC heat dome scenario.
The Dave Lennox Signature Collection includes the highest-rated residential HVAC equipment available. The SL28XCV variable-capacity AC is the top choice for OKC homeowners focused on maximum OG&E savings.
Carrier Infinity and Performance series offer excellent build quality and the Infinity Touch communicating thermostat: a top choice for new Edmond homes and larger Nichols Hills properties with complex zoning needs.
Rheem's Prestige and Classic Plus series deliver solid performance at a lower price point than Trane or Lennox: the right choice for Del City or The Village homeowners replacing aging systems on a budget.
Oklahoma's 105°F summer heat domes demand more than standard residential cooling equipment. Every system Smith Brothers installs is sized correctly for your home's actual cooling load and rated for Oklahoma's peak operating conditions.
Most Common
The standard configuration for OKC homes: outdoor condensing unit, indoor air handler with evaporator coil, and connected ductwork. Available in single-stage, two-stage, and variable-speed models. Variable-speed units are significantly better at humidity control during Oklahoma's humid spring and summer periods.
No Ductwork Needed
Ideal for homes without existing ductwork, room additions, converted garages, and historic OKC properties in Heritage Hills or Mesta Park where traditional duct installation would damage original architecture. Each indoor unit conditions its own zone independently for maximum efficiency.
All-in-One
A single outdoor cabinet containing all heating and cooling components. Common in North OKC, The Village, and older ranch-style homes where space for a separate indoor air handler is limited. Simpler installation and easier service access than split systems.
Oklahoma ice storms demand a furnace that starts reliably at maximum load on the first cold night of the season. Every heating system Smith Brothers installs is pre-season tested and CO-verified before we leave the job.
Most Installed
Gas furnaces connected to ONG natural gas service are the most common heating solution across the OKC metro. Modern 96% AFUE two-stage or modulating furnaces burn 26 cents less of every gas dollar compared to a 70% AFUE unit from the 1990s. The payback in ONG savings is measurable within the first heating season.
Heating + Cooling
A heat pump provides both summer cooling and winter heating in a single system. For OKC's climate, Smith Brothers recommends hybrid dual-fuel configurations: the heat pump handles mild winter days efficiently, and the gas furnace takes over when temperatures drop below the heat pump's optimal operating range during ice storms.
No Gas Needed
For Mustang and western Canadian County homes served by Canadian Valley Electric Cooperative rather than ONG natural gas, or homes where gas line installation is not practical, electric furnaces provide reliable heating with no combustion, no CO risk, and no annual gas valve inspection requirements.
SEER2 is the current federal efficiency rating standard. In Oklahoma's 105°F summers, the difference between a 14 SEER2 and a 20 SEER2 system is significant on every monthly bill.
| SEER2 Rating | Annual OKC Cooling Cost | vs. 14 SEER2 Baseline | Category |
|---|---|---|---|
| 14 SEER2 | $1,240/yr (est.) | Baseline | Standard |
| 16 SEER2 | $1,085/yr (est.) | Save ~$155/yr | Good |
| 18 SEER2 | $965/yr (est.) | Save ~$275/yr | Better |
| 20 SEER2 | $868/yr (est.) | Save ~$370/yr | High Efficiency |
| 24+ SEER2 | $722/yr (est.) | Save ~$520/yr | Premium |
Estimates based on average OKC home (2,000 sq ft), OG&E rate ~$0.12/kWh, and 1,800 annual cooling hours. Actual savings vary.
Most efficiency calculators are built on national averages: roughly 750 annual cooling hours. Oklahoma City runs closer to 1,800 cooling hours per year. That means every efficiency improvement multiplies in value compared to what the spec sheet suggests.
Oklahoma City's specific air quality challenges: Cedar Fever season, Red Dirt particulate, and lake-area humidity: require targeted IAQ products, not generic solutions.
Generates positive and negative ions that neutralize airborne pathogens, allergens, and odors. Particularly effective against Cedar Fever pollen during OKC's December through March season. No replacement bulbs or maintenance required.
UV-C light destroys mold, bacteria, and virus DNA at the cellular level. Installed at the evaporator coil: the site of mold growth in Norman, Bethany, and lake-adjacent OKC homes. Annual UV bulb replacement maintains effectiveness.
4-inch or 5-inch media filter housing upgrade. Captures Oklahoma Red Dirt particulate, Cedar pollen, and fine smoke particles at MERV-13 efficiency without the airflow restriction of thin high-MERV filters. Lasts 6 to 12 months per filter.
Produces hydro-peroxide plasma that actively travels through the home rather than waiting for air to pass through the handler. Addresses surface contamination, VOCs, and persistent odors. Cell replacement every 2 years.
The thermostat and control system determines how efficiently your HVAC operates day to day. Smith Brothers installs and programs communicating thermostats that integrate directly with the equipment for full system efficiency.
Trane Comfort Link II, Lennox iComfort S30, and Carrier Infinity Touch thermostats communicate directly with the equipment over a proprietary digital protocol. They read equipment performance data in real time, automatically adjust staging, and store fault codes for faster diagnostics.
Nest Learning and Ecobee SmartThermostat provide remote access, learning schedules, and utility rate optimization. Compatible with most OKC residential HVAC systems. Smith Brothers programs and calibrates smart thermostat installations to match your system's staging properly.
Multi-zone systems with motorized dampers allow independent temperature control across different areas of the home. Particularly valuable in larger Edmond and Nichols Hills homes where sun-facing rooms require different conditioning than shaded areas.
The HVAC product that is right for a 1,400 sq ft Del City ranch built in 1962 is not the same as the right product for a 3,200 sq ft Edmond home built in 2008. Duane Smith's 25-year record of honest recommendations is why OKC homeowners refer their neighbors.
We measure your home: windows, insulation, square footage, ceiling height. We never guess tonnage.
We select equipment rated for 105°F operation and sized for your specific utility provider and rates.
Complete installed price before commitment. No surprises after installation. Financing options presented upfront.
Permitted installation with city inspection. Full startup testing, CO verification, and homeowner walkthrough.
There is no single answer: it depends on your budget, your home's size and construction, and your utility provider. Trane is our most-installed brand because of its proven reliability at sustained high temperatures. Lennox is the right choice when maximum SEER2 efficiency and OG&E savings are the priority. Carrier suits homeowners who want communicating thermostat integration. Rheem is the best value choice for budget-conscious replacements. Duane Smith will tell you honestly which brand fits your specific situation.
SEER2 (Seasonal Energy Efficiency Ratio 2) measures how efficiently an AC system converts electricity into cooling. Higher SEER2 means lower operating costs. In Oklahoma City, with approximately 1,800 annual cooling hours versus the national average of 750, the financial benefit of higher-SEER2 equipment is significantly larger than in most of the country. Every SEER2 point above the minimum 14 pays back faster in OKC than the manufacturer's spec sheet assumes.
For most OKC homes connected to ONG natural gas, a hybrid dual-fuel system is the best of both: a heat pump handles mild winter days at high efficiency, and the gas furnace takes over during Oklahoma's ice storm events when outdoor temperatures drop below the heat pump's optimal range. Pure electric heat pump systems are better suited for homes without natural gas service. Smith Brothers sizes and configures hybrid systems specifically for Oklahoma's weather patterns: not a generic national template.
Yes. Mini-split systems are one of the best solutions for historic OKC homes in Heritage Hills, Mesta Park, and the Campus Corner area in Norman: homes where cutting new ductwork would damage original architecture. They are also ideal for room additions, converted garages, and sun rooms where extending existing ductwork would compromise system performance. Smith Brothers selects and configures mini-split systems for each specific application.
Yes. Smith Brothers offers flexible financing through reputable lenders on all HVAC system installations. Monthly payment terms from 12 to 84 months, with most credit decisions returned within minutes. The 10% military discount and 10% senior discount apply to the installed price before financing is calculated. Federal IRA 25C tax credits of up to $2,000 on qualifying heat pump installations can be applied toward your loan balance at tax filing. See our Financing page for complete details.
Call Duane Smith and the Smith Brothers team for a free product consultation. We measure your home, calculate the correct load, and present the right options: from three brands at three price points: with complete installed pricing before any commitment.
