What is the recommended air filter replacement frequency for an HVAC system?

It’s recommended to replace your HVAC air filter every 1 to 3 months, depending on factors like filter type and indoor air quality. Homes with pets or high dust may require monthly changes.

How often should AC maintenance be performed?

AC maintenance should be scheduled at least once a year, ideally in spring, to ensure efficient operation and prevent unexpected breakdowns during peak usage.

When is a broken AC considered an emergency?

A broken AC is an emergency when it poses health risks, particularly during extreme temperatures, or if there are electrical issues that could lead to a fire.

What maintenance does a furnace need?

Furnace maintenance includes replacing or cleaning the air filter every 1 to 3 months, inspecting and cleaning burners, and checking electrical connections to ensure safe operation.

How long does an AC replacement take?

An AC replacement typically takes 4 to 8 hours, depending on the complexity of the system and any necessary modifications to the installation site.

Dial One Johnson Plumbing, Cooling & Heating

Name: Dial One Johnson Plumbing, Cooling & Heating
Address: 158 Hood St, Cedar Hill, TX 75104, Cedar Hill, TX, US
Telephone: +1469-256-7828

Reviews read through Aug 6, 2026 · Scored Aug 28, 2026 · 118 reviews read

158 Hood St, Cedar Hill, TX 75104

469-256-7828

Visit Website

81.9

DFW Pros score

4.9★ 1,238 reviews118 read in full

Best for: Experienced technicians, clear explanations

Dial One Johnson, Dallas Plumbing, Heating and AC Repair

Dial One Johnson Plumbing, Cooling & Heating is well-regarded for its experienced technicians who communicate effectively with customers about their plumbing and HVAC needs. Reviewers appreciate the courteous service and prompt responses to calls. However, some feedback indicates dissatisfaction with pricing and diagnostic accuracy, which potential customers should consider when choosing this service provider.

What reviewers consistently mention

Several reviewers highlight the courteous and knowledgeable technicians, noting their ability to explain issues clearly and provide thorough solutions. This was particularly emphasized in reviews [9], [10], and [12].
Multiple customers praise Dial One for their responsiveness and efficiency in addressing service calls. Many expressed satisfaction with the quick turnaround times and effective repairs, as seen in reviews [8], [10], and [18].

Watch out for

Several reviewers reported concerns about pricing, mentioning that the services seemed overpriced compared to competitors, particularly for simple tasks. This is reflected in reviews [4] and [6].
Multiple customers experienced dissatisfaction with the quality of diagnostics provided, claiming that issues were either missed or improperly addressed, leading to unnecessary costs. This is noted in reviews [3] and [5].

How the reviews break down

4.9★ average from 1,238 Google reviews

5★
1,173 95%
4★
30 2%
3★
8 1%
2★
5 0%
1★
22 2%

Low ratings are rare here — 2% of reviews are one or two stars.

Dial One Johnson Plumbing, Cooling & Heating provides plumbing services including water heater replacement, leak repair, and toilet repair. The team is known for its knowledgeable technicians and courteous staff.

Services offered by Dial One Johnson Plumbing, Cooling & Heating

HVAC Contractor: Provides comprehensive heating, ventilation, and air conditioning solutions for both residential and commercial properties.
Air Conditioning Contractor: Specializes in the installation and maintenance of air conditioning systems to ensure optimal indoor comfort.
Air Conditioning Repair Service: Offers repair services for malfunctioning air conditioning units to restore efficient cooling performance.
Air Duct Cleaning Service: Cleans air ducts to improve indoor air quality and enhance the efficiency of HVAC systems.
Gas Installation Service: Handles the installation of gas lines and appliances, ensuring safety and compliance with regulations.
Heating Contractor: Provides heating system installation, maintenance, and repair services to ensure reliable warmth during colder months.
Hot Water System Supplier: Supplies and installs various hot water systems to meet residential and commercial hot water needs.
Plumber: Offers a range of plumbing services including repairs, installations, and maintenance for residential and commercial systems.