Business Details
50+ Years
experience
Emergency
services
Trusted HVAC & Plumbing Services in Dallas, TX
Harlen Johnson Heating & Air Conditioning has served Dallas, TX since 1957, delivering expert HVAC and plumbing solutions tailored to residential and commercial needs. Our licensed technicians prioritize prompt, reliable service, specializing in AC repair, heating installation, ductless systems, and emergency plumbing. With decades of combined experience, we emphasize energy efficiency, customer education, and transparent communication. Our commitment to quality is reflected in our 98% customer satisfaction rate and 24/7 emergency availability.We invest in advanced tools and training to ensure systems operate at peak performance, offering service agreements to prevent future issues. Backed by industry certifications and a reputation for resolving complex problems, we guarantee satisfaction through warranties on parts and labor. Our team treats every client's property with respect, providing clear cost breakdowns and prioritizing long-term comfort over short-term sales.
Services
AC Repair
Heating Installation
Plumbing Replacement
Ductless AC Installation
Sewer Cleaning
Water Heater Repair
Indoor Air Quality
Commercial HVAC
Drain Unclogging
Emergency Services
Details
- Year established: 1957
Highlights and features
- We offer 24/7 emergency HVAC and plumbing services with rapid response times.
- Our technicians hold industry certifications and undergo continuous technical training.
- We guarantee upfront pricing with no hidden fees or surprise charges.
- Our service agreements reduce emergency repairs through preventive maintenance.
- We provide detailed system diagnostics with visual inspections using camera technology.
What people say
24/7 emergency service
Knowledgeable technicians
Prompt appointment scheduling
Clear cost explanations
Effective sewer cleaning
Services
AC Repair
Our certified technicians provide rapid diagnosis and repair of cooling system malfunctions. We address refrigerant leaks, compressor failures, thermostat issues, and electrical component repairs using OEM parts. Emergency services restore comfort during Texas heatwaves, with transparent pricing for repairs ranging from minor fixes to major component replacements. Preventive maintenance plans reduce future breakdowns.
Heating Installation
We install high-efficiency gas and electric heating systems tailored to property size and climate demands. Our process includes load calculations, ductwork evaluation, and energy rating analysis. Technicians handle permits and inspections while upgrading outdated systems to modern smart thermostats. Financing options available for qualifying customers seeking improved winter comfort.
Plumbing Services
24/7 response for burst pipes, slab leaks, and sewer backups using hydro jetting and camera inspections. We repair and replace water lines, fixtures, and tankless water heaters with minimal disruption. Commercial clients receive priority scheduling for plumbing emergencies affecting business operations in Dallas.
Ductless Installation
Custom ductless HVAC solutions for additions, historic homes, or commercial spaces. Our designers map optimal indoor unit placement and refrigerant line routing. Installations include Wi-Fi-enabled controls for zoned temperature management, improving energy efficiency without major construction in Dallas properties.
Sewer Cleaning
Advanced hydro jetting clears tree root invasions and grease buildup in sewer lines. Camera inspections identify cracks and misaligned pipes needing repair. Residential and commercial customers receive maintenance schedules to prevent backups, with emergency excavation services for critical line failures affecting Dallas properties.
People
Miguel
Plumbing Technician
Certified plumber with 8 years of experience handling emergency repairs and commercial installations. Specializes in leak detection and water heater replacements while maintaining clear customer communication.
David
Service Manager
12-year HVAC industry veteran coordinating service appointments and quality control. Focuses on customer education about system maintenance and energy-saving opportunities for Dallas properties.
Felipe
Installation Specialist
Master HVAC technician with expertise in ductless system installations and complex retrofit projects. Ensures precise equipment sizing and refrigerant charging for optimal efficiency.
Questions
What are common signs I need AC repair?
Inadequate cooling, unusual noises, weak airflow, and frequent cycling indicate potential AC issues requiring professional diagnosis.
Do you service all HVAC brands?
Our technicians work on all major HVAC brands, including both residential and commercial systems.
Are financing options available?
Yes, we offer financing programs for qualifying HVAC replacements and major repairs.
How often should heating systems get maintenance?
Annual maintenance before winter ensures optimal performance and identifies potential issues early.
What emergency plumbing services are available?
We provide 24/7 response for burst pipes, sewer backups, and water heater failures affecting property safety.
Can ductless systems cool multiple rooms?
Multi-zone ductless systems effectively cool up to four rooms from a single outdoor unit.
