Parker and Sons was founded in 1974 and has one of the largest teams in this list. This allows them to have a broad range of services, from HVAC to plumbing, draining cleaning, and others. 

The company has received many awards and certifications. These include Congressional Recognition, Industry Leader Award, and #1 Service Company, which is why they’re well-known in Phoenix. 

In terms of equipment, they have updated ones that are geared towards improving indoor air quality. Their air filtration tools, in particular, are notable for being complete for conducting air scrubbing and sterilization.

Many also compliment their representatives to be fast in responding to emergencies. All of them have also undergone technical training, background checks, and the North American Technician Excellence (NATE) program. 

We also appreciate how they don’t put extra fees when you ask for repairs during holidays and nights. They’re also up front with their fees and can be flexible depending on your budget. 

Our only issue is that some customers have experienced getting inconsistent quality in terms of repairs. The good news is that they are quick to respond to these complaints and have provided follow-up repairs or vouchers if needed. 

Scottsdale has been around since 1947 and offers services for Paradise Valley, Scottsdale, and nearby areas. They are notable for their fast response times for both consultations and emergencies. 

They provide clients with a lifetime workmanship warranty, which shows confidence in their work. Their technicians are also certified and trained by NATE.

Providing many financial options is one of their strengths. They’ve collaborated with GreenSky, Arizona Public Service, and Salt River Project to provide rebates and zero-interest payment plans. 

You can also get plenty of discounts and coupons for HVAC tune-ups and installations through their website. Their discounts reach up to $200.

Many of the customers we’ve talked to complimented how professional their representatives were in terms of explaining what they will fix. They also give many tips and advice to extend the lifetime of AC and heating units, which is commendable. 

We also don’t have any complaints regarding their equipment because it’s updated and well-rounded. 

They also have expertise in handling Trane, Mitsubishi, and Lennox ACs. 

A downside with them though is that their fees can be expensive. Be sure to take advantage of their coupons if they’re applicable to you.

Reliance was founded in 1984 and is a family-owned business known for their fast response rates. 

Subscribing to their service is easy through the Peace-of-Mind Membership, which gives many benefits for $208 per unit. Its inclusions are plenty and very handy, and they include annual inspections, repair discounts, and priority scheduling. 

They have one of the most comprehensive list of services we’ve seen, and from what we’ve gathered, they are also well-equipped for this. This includes repairs for heat pumps, ACs, gas furnaces, and more. 

Their team has many years of experience in the industry and has training and certifications from National Technical Institute (NTI) and NATE. 

Reliance has expertise in handling PuriFi Labs and Trane products, which makes them an excellent choice if your house uses these. 

We also liked their payment plans because they promote regular maintenance for your units at an affordable price. In fact, their maintenance plan is sensibly priced at $17 per month. 

The only downside with them is that they’ve received some minor complaints about the professionalism of their staff. 

Arizona Comfort Specialists is a good choice because of their flexibility in handling both residential and commercial clients. They have more than 20 years of experience.

We like how well-rounded their services are, as they include repairs, retrofits, unit sales and installation, and duct designs. 

Their team is composed of HVAC experts with years of experience. They are also praised by many clients to be professional and quick at doing repairs. 

All of their technicians are also certified by NATE and Trane as “Comfort Specialists.” 

Our favorite service advantage of theirs is how easy it is to schedule an appointment for an estimate or repair with them. Their website guides you through every step using a user-friendly interface. 

Payment is flexible with them because of their partnership with GreenSky and Service Finance Company for 0% interest plans. 

We found their HVAC unit selling and installation process to be very convenient. Their representatives are patient in explaining the pros and cons of each unit and do their best to match the one most suited for your budget and house.

We only wish that their operating hours are extended, as they are closed on Sundays. 

Alien is one of the youngest HVAC companies in Phoenix, founded in 2008. They’ve built a reputation for their fast response rates and professional representatives.

They have many awards and certifications, including those from the Electric League of Arizona, Angie’s List, and Ethical Arizona. They’ve handled more than 10,000 HVAC systems and are praised by many clients for producing long-lasting results. 

The company has one of the largest selections of HVAC units we’ve seen. This includes units from Ruud, Goodman, Ameristar, Daikin, and more. 

We also like how their representatives thoroughly explain the differences in efficiency and performance of each while still considering your budget.

One of their areas of expertise is in energy auditing, which is great for finding air quality issues and can help in lessening electrical costs. 

Alien’s maintenance programs also contain many important services and can be availed for both residential and commercial units. These include maintenance for coils, fan blades, and condensers.

However, it has a pricey cost of $169 per unit. The good news is that they offer a $20 discount if you will avail of it for more than two units.