📘 Knowledge Base
Company Information
Company Name: Harlen Johnson Heating & Air Conditioning
Address: 2643 Royal Lane, Dallas, TX 75229
Phone: (972) 241-7771
About the Company: Since 1957, Harlen Johnson Heating & Air Conditioning Co. has been keeping homes and businesses across the Dallas-Fort Worth area comfortable, efficient, and safe. Family-owned and locally operated, we’ve built our reputation on one simple principle — do the job right the first time.
From emergency AC repairs to complete system replacements and plumbing services, our licensed technicians deliver reliable craftsmanship, honest pricing, and 5-star service every step of the way. We understand that heating, cooling, and plumbing issues can’t wait — which is why we offer 24/7 emergency service and flexible financing options to make comfort accessible year-round.
Target Audience: Harlen Johnson’s ideal / primary customer segments include:
Homeowners or renters in the Dallas / Dallas-metro area (residential customers)
Commercial property owners / managers in the Dallas area needing HVAC, plumbing, or indoor air quality services
Customers needing emergency repair or system replacement (i.e. urgent or comfort-critical)
People interested in energy efficiency, retrofits, improved indoor air quality, or system upgrades
Customers who prefer a licensed, full-service provider capable of handling HVAC + plumbing + indoor air quality
Services:
Heating & Cooling
Air Conditioning Repair & Installation – From quick fixes to full replacements, we handle all major brands and systems with precision and care.
Heating Repair & Installation – Keep your home warm and efficient with expert furnace and heat pump services.
Preventive Maintenance – Seasonal tune-ups designed to extend system life, reduce breakdowns, and improve energy efficiency.
Ductless & Mini-Split Systems – Energy-efficient comfort for rooms or properties without ductwork.
Indoor Air Quality
Air Duct Cleaning & Filtration – Improve air quality and system efficiency with professional duct cleaning.
Air Purifiers, UV Lights & Humidifiers – Breathe cleaner, fresher air with modern IAQ technology.
Whole-Home Air Solutions – Reduce allergens, pollutants, and odors for a healthier living environment.
Plumbing & Drains
Plumbing Repairs & Leak Detection – Fast, expert solutions for leaks, clogs, and pipe issues.
Water Heaters & Tankless Systems – Reliable installation, replacement, and maintenance for all models.
Sewer & Drain Services – From hydro-jetting to re-piping, we handle it all safely and efficiently.
Why Choose Harlen Johnson:
Family-Owned Since 1957 – Decades of trust, integrity, and excellence in every job.
Licensed & Certified Technicians – TACLB43628C and RMP38583 credentials ensure quality and compliance.
24/7 Emergency Service – Because comfort emergencies don’t follow business hours.
Transparent Pricing – Honest, upfront estimates with no hidden fees.
Financing Available – Flexible options to fit your budget.
Veteran, Senior & Teacher Discounts – We proudly serve those who serve our community.
Our Mission: At Harlen Johnson, our mission is simple: to keep Dallas comfortable.
We combine decades of technical expertise with genuine customer care to deliver heating, cooling, and plumbing solutions that stand the test of time. Every service call is backed by our 100% satisfaction guarantee — because your comfort is our business.
Pricing & Offers
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FAQs
Question: What brands of equipment do you carry / install / service?
Answer: We are a preferred dealer of American Standard, Lennox and Carrier. We also carry ductless systems manufactured by Mitsubishi and Samsung.
Question: Are you a licensed and insured company?
Answer: Yes, and we back all work with a 100% satisfaction guarantee.
Question: What area do you serve?
Answer: We proudly serve Dallas - Fort Worth Metroplex.
Question: What service plans do you offer?
Answer: We offer the following plans: [{'name': 'Platinum Membership', 'price': '$209 per year', 'description': '2 maintenance visits; 20 point inspection; 10% discount on IAQ, repairs and accessories; 5% discount on new equipment. Priority status.'}]
Question: Is the diagnostic fee applied to the repair cost?
Answer: Yes, if you decide to go ahead with the repair, we apply the diagnostic/service fee towards the total cost.
Question: Do you offer payment plans or financing?
Answer: Yes. We offer financing options through Synchrony, Wells Fargo and Turns Financial.
Question: What payment methods do you accept?
Answer: All credit cards accepted. Cash, Check. Cashier Check
Question: Do you provide free estimates?
Answer: Yes. We provide free estimates on equipment installation.
Question: Can I pay my bill/invoice or make payment online?
Answer: If we have already completed a job for you, you should have received an invoice with a link to make an online payment. Please let us know if you didn't receive this.
Question: How much do you charge for an installation estimate?
Answer: We offer free estimates on equipment installation
Question: Do you offer any specials or discounts?
Answer: Yes! We provide special offers for new clients, veterans, teachers and senior citizens. Periodically throughout the year, we will have specials on HVAC and plumbing equipment.
Question: What are your hours of operation?
Answer: Our business hours are Monday-Friday 8am - 5 pm. Emergency Service available after hours
Question: What services do you provide?
Answer: We offer a full range of services including heating, cooling, ductless systems, indoor air quality solutions, plumbing, and sewer & drain services
Question: Can you provide an estimate over the phone or via email?
Answer: No, we cannot provide estimates remotely because each system is unique. For accuracy, our technicians must assess your system on-site to provide a precise estimate with recommended solutions and costs. If you choose to move forward with the service, the service fee will be applied toward the repair.
Question: What HVAC systems do you install/repair?
Answer: We work on all types of systems; our top brands are Lennox, Carrier, American Standard and Trane.
Question: How often should I have my HVAC system serviced?
Answer: Twice a year. Our HVAC membership covers both maintenance visits for only $209!
Question: What size HVAC system do I need for my home/business?
Answer: To determine the best fit, a technician would need to visit. When are you available for a free estimate?
Question: Can you help with a thermostat issue? It seems to be malfunctioning.
Answer: Okay lets see if we can fix it by troubleshooting some things do you know if batteries are dead, if there’s an error code, if the breaker is off, or if it’s set to cool or heat.
Question: My HVAC system is making strange noises. What should I do?
Answer: Is the unit running normally or are you experiencing mechanical issues as well? If it is causing the unit to malfunction, lets start with getting it turned off and get someone over there.
Question: How do I know if I need to replace my HVAC unit or just repair it?
Answer: Depending on the age of the unit, the refrigerant may no longer be available due to a new law put in place at the beginning of 2025, let get someone over there to check it out.
Question: Can you help with energy efficiency? How can I reduce my heating/cooling costs?
Answer: We offer Oncor Rebates. I can schedule a technician to come out and see if you’re eligible.
Air Conditioning
Question: Why is my AC not cooling properly?
Answer: There are many reasons your unit could be malfunctioning. Let’s schedule a technician to come out and take a look
Question: How often should I replace the air filter in my AC unit?
Answer: Every 30 days. Our membership includes 1 free filter per unit.
Question: Is it normal for my AC to freeze up in the summer?
Answer: That could be due to a few different reasons. We advise you to turn off your unit now; it can take up to 5 hours to fully defrost but we can have someone come out and take a look at it.
Question: Why is my air conditioner blowing warm air?
Answer: Most likely due to low refrigerant. Depending on the age of your unit we may be able to recharge it today. Lets get someone out there to take a look at it.
Heater
Question: Why is my heater not turning on?
Answer: There are many reasons your unit could be malfunctioning. Let’s schedule a technician to come out and take a look
Question: How can I fix inconsistent heating throughout my home?
Answer: Sometimes getting your homes ducts cleaned could help with that we do have a $250 off coupon on our website if you wanted to look into that.
Question: What should I do if my furnace is blowing cold air?
Answer: There are many reasons your unit could be malfunctioning. Let’s schedule a technician to come out and take a look
Ductwork and Ventilation
Question: How do I know if my ductwork needs cleaning or sealing?
Answer: Do you have a burning smell when you turn on the heat? If you have pets, allergies, or smokers in your household, we recommend a duct clean
Question: How often should I have my air ducts cleaned?
Answer: Every 3–5 years
Question: Can you inspect my air ducts for leaks?
Answer: Yes
Maintenance & Repairs
Question: Do you offer annual HVAC maintenance packages?
Answer: Yes
Question: How much will it cost to repair my HVAC system? Do you offer free estimates?
Answer: Repairs vary based on your unit’s specific needs
Plumbing – Pipe Repairs & Replacements
Question: Why are my water bills higher than usual? Could it be a pipe leak?
Answer: Most likely a water leak. We can perform a static pressure test to confirm
Question: Do you handle pipe replacements? How do I know when my pipes need replacing?
Answer: Yes, we do partial and full system pipe replacements. You may know it’s time to replace your pipes if you are having drain problems or water leaks
Question: My pipes are frozen—can you help me unfreeze them?
Answer: Yes, this is an urgent request, lets get someone out there to take a look at it.
Question: How can I prevent pipe bursts in the winter?
Answer: Drip your faucets/bathtubs and open cabinets under sinks
Plumbing – Fixture Installation & Repair
Question: Can you install a new kitchen or bathroom sink/faucet for me?
Answer: Yes
Question: My faucet is leaking—can you fix it?
Answer: Yes
Question: Do you install dishwashers, garbage disposals, or water softeners?
Answer: Yes
Question: I have low water pressure in my shower. Can you fix this?
Answer: Yes
Plumbing – Emergency Services
Question: Is your plumbing service available after hours or on weekends?
Answer: Yes, 50% off for members, $199 for non-members, $299 for commercial customers
Question: What should I do if I have a plumbing emergency at night or on a holiday?
Answer: CALL US! We have on-call techs 7 days a week 365 days a year.
Question: My toilet is clogged and overflowing—can you fix it right away?
Answer: Yes – this is urgent, we will send a tech right away! Turn off the water behind your toilet for now
Plumbing – Water Quality & Conservation
Question: Do you offer water filtration or water softening systems?
Answer: Yes
Question: How can I improve the water quality in my home?
Answer: Water heater flush / replacement or a whole home water filtration system
Question: Do you have solutions for high water pressure problems?
Answer: Yes
Question: How can I conserve water in my home?
Answer: Water heater flush / replacement, lets have someone come out and take a look at it for you.
Question: I requested a quote for a new system. When can I expect to hear back from you?
Answer: You will hear back from us via email.
Question: The technician finished the work, but I have a few questions about what was done.
Answer: Okay, let me inform our team to call you back and go over those questions with you.
Question: I noticed an issue with the work done; can I schedule a follow-up visit?
Answer: Let me notify our team and can have someone call you back to go over that with you.
Question: The system was repaired, but it’s still not functioning properly. Can you send someone again?
Answer: Let me notify our team and can have someone call you back to go over that with you.
Question: I had a service done recently, but I have a few concerns. Can I speak with a manager?
Answer: I will notify our manager that you would like to speak to them about some concerns. I will pass that message along anything else you would like me to add?
Question: Do you offer free quotes or free estimates for HVAC and Plumbing?
Answer: Yes we do, our team can do it over the phone or have someone come out and do a in person quote. What would you prefer?
Common Objections & Responses
“It’s too expensive.” →I completely understand — quality HVAC work is an investment. Most of our clients felt that way too until they saw how much they saved on repairs and energy bills with a properly installed system.
“I’m not ready yet.” → Totally fine — timing matters. Would you like me to check back next week or reserve your quote price so it doesn’t change before you’re ready?
“I want to get other quotes first.” → That makes perfect sense — comparing is smart. Just keep in mind, Harlen Johnson has been serving Dallas since 1957 with licensed technicians and a 100% satisfaction guarantee, so you’re in good hands either way.
“I need to think about it.” → Absolutely, take your time! Is there a specific part you’d like to think through — price, timing, or which system option makes the most sense for your home?
“I don’t want to be pressured into a decision.” → I get that completely — we’re not here to pressure you. My job is simply to make sure you have all the info you need to make the best decision for your comfort and your budget.