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AC Installation Dallas, TX
A correctly sized and properly installed AC system is the single largest factor in your home’s cooling efficiency. In Dallas, where summers routinely exceed 96°F and humidity sits above 66%, the margin for error is small. An undersized system runs constantly without reaching the set temperature. An oversized system short-cycles, wasting energy and failing to remove humidity.
Harlen Johnson HVAC, Plumbing & Electrical has been installing AC systems in Dallas since 1957. We use Manual J load calculations to size every system to your home’s specific requirements. We install American Standard, Ameristar, Carrier, and Lennox equipment and back every installation with manufacturer warranties plus our own workmanship guarantee.
Call 972-241-7771 for a free in-home estimate
Choosing the Right AC for Your Dallas Home
Central Air Conditioning
Central air distributes cooled air through ductwork to every room. Standard for Dallas homes built after 1960 with existing ducts. Modern units range from 14 to 25+ SEER2. For Dallas's extended cooling season, we recommend 16 SEER2 or higher to balance upfront cost with long-term energy savings.
Ductless Mini-Split Systems
Mini-splits are ideal for homes without ductwork, room additions, converted garages, or zone-by-zone control. Each indoor handler operates independently. Mini-splits achieve 20-30+ SEER2, the most efficient option available. Popular in older Dallas neighborhoods like Lakewood and East Dallas where installing ductwork would require invasive construction.
Heat Pumps
Heat pumps provide both cooling and heating from a single system. In Dallas's mild winters, a heat pump handles heating efficiently without a separate furnace for most of the season. A cost-effective choice for homeowners looking to simplify their HVAC setup.
We assess your space during a free consultation and recommend the system that matches your layout, budget, and cooling priorities.
SEER2 Ratings and Your Energy Bill
SEER2 (Seasonal Energy Efficiency Ratio) measures cooling output per unit of energy. Higher SEER2 = lower bills. The federal minimum for Texas is 15 SEER2 for split systems.
Estimates assume a typical 2,000 sq ft Dallas home running AC 6-8 months. Actual savings depend on insulation, ductwork, and Oncor rates.
AC Installation Cost in Dallas
Financing available. 0% for up to 6 – 24 months financing available. Oncor Take a Load Off Texas: up to $65 for smart thermostats. $750 off complete system installation.
Call 972-241-7771 for a free, no-obligation estimate
Dallas Permits and TDLR Requirements
New AC installations in Dallas require a mechanical permit from the City of Dallas Building Inspection Department. All HVAC work in Texas must be performed by TDLR Air Conditioning and Refrigeration (ACR) licensed technicians. We handle permits as part of every installation.
TACL License:
Our Installation Process
Free In-Home Consultation
We measure the space, evaluate insulation and ductwork, and perform a Manual J load calculation. You receive a written estimate with no obligation.
System Selection
Based on the load calculation, we recommend systems from American Standard, Ameristar, Carrier, and Lennox that match your requirements.
Permit and Scheduling
We file the mechanical permit with the City of Dallas and schedule installation at your convenience.
Professional Installation
Equipment placement, refrigerant lines, electrical wiring, thermostat setup, condensate drain. Most completed in one day.
Testing and Handoff
Full cooling cycle test, airflow and temperature verification, thermostat calibration. We walk you through operation and register your warranty.
After installation, enroll in our annual maintenance plan to protect your investment and maintain warranty coverage.
Schedule your free consultation: 972-241-7771
Dallas Neighborhoods We Serve
Dallas is a city of distinct neighborhoods, each with housing stock and infrastructure that create specific AC demands.
Preston Hollow
Preston Hollow's tree-lined streets between Royal Lane and Northwest Highway are home to ranch-style houses built primarily in the 1950s and 1960s. Many still have original ductwork that restricts airflow and forces AC systems to work harder. The mature live oak canopy keeps condensers shaded but drops debris that clogs condenser coils without seasonal cleaning. Many homeowners are replacing 1960s systems with modern high-SEER2 units, often adding zoning for large floor plans.
Lake Highlands
Lake Highlands sits in northeast Dallas along the White Rock Creek corridor. Homes range from 1960s brick ranches to 1980s two-story builds. Older homes frequently have undersized AC systems that were adequate decades ago but struggle with today's extended summer heat. Many homeowners here are upgrading from aging 8-10 SEER2 systems to 16+ SEER2 units to manage rising Oncor electricity costs.
Lakewood
Lakewood is one of Dallas's oldest neighborhoods, established in 1882 near White Rock Lake. Homes built in the 1920s through 1950s often have plaster walls, limited attic insulation, and original single-pane windows, all of which increase cooling load. Retrofit AC work in Lakewood requires careful load calculations because the home envelope differs significantly from modern construction. First-time central AC in 1920s-50s homes requires careful ductwork planning. Ductless mini-splits avoid invasive construction.
Oak Lawn and Uptown
The Oak Lawn and Uptown corridor north of downtown includes mid-century apartments, 1990s townhomes, and modern high-rises. Older apartment conversions frequently rely on through-wall or window units far less efficiently than split systems. Ductless mini-splits are increasingly popular in Oak Lawn for homeowners who want zoned cooling without tearing into walls for ductwork. Ductless mini-splits are the system of choice in apartment conversions and mid-century buildings where running ductwork is impractical.
East Dallas and the M Streets
East Dallas, including the M Streets (Morningside, Mercedes, Monticello, McCommas), features Tudor and Craftsman homes from the 1920s through 1940s. Original construction was designed for a pre-AC era. Many have had systems added piecemeal over the decades, resulting in mismatched components, poorly routed ductwork through hot attics, and inadequate return air paths.
North Dallas and Far North Dallas
The corridor along the Dallas North Tollway and Preston Road from LBJ Freeway to the city limits includes homes from every decade since the 1970s. Tract homes built in the 1970s and 1980s commonly used builder-grade equipment with 8-10 SEER2 ratings. Many of these systems are reaching or exceeding their 15-20 year expected lifespan.
We also serve University Park, Highland Park, Kessler Park, Oak Cliff, Bishop Arts, Lower Greenville, Deep Ellum, and communities throughout the DFW metroplex.
Call 972-241-7771 for same-day service in your Dallas neighborhood
AC Installation FAQ
How long does installation take?
Standard installation with existing ductwork: one day. New ductwork adds 1-2 days depending on home layout.
How do I know what size AC I need?
Manual J load calculation accounts for square footage, insulation, windows, ceiling height, and orientation. Rules of thumb are unreliable. We calculate during our free consultation.
Does Dallas require a permit?
Yes. New installations require a mechanical permit from the City of Dallas Building Inspection Department. We handle the application.
What brands do you install?
American Standard, Ameristar, Carrier, and Lennox. We recommend the brand that matches your requirements.
Are there rebates for new AC?
Oncor Take a Load Off Texas offers rebates on qualifying equipment, including up to $65 for smart thermostats. Federal tax credits may apply for high-efficiency heat pumps.
What warranty do I get?
Manufacturer parts warranty (5-10 years) plus our workmanship guarantee on installation labor. Annual professional maintenance is required to maintain the manufacturer warranty.
Schedule AC Installation in Dallas
Harlen Johnson HVAC, Plumbing & Electrical
2643 Royal Lane, Dallas, TX 75229
Phone: 972-241-7771
Current promotion: $750 off complete AC system installation
Call 972-241-7771 or schedule online for ac installation in Dallas
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