Affordable HVAC Service

$99.99 – Tune Up & 54-Point Inspection

Experience budget-friendly HVAC care with our $99.99 service offer. Benefit from a 54-point inspection, filter replacement, and efficiency enhancements. Your wallet and home system both win.

    $99.99 Tune UpEcobee Smart ThermostatREME HALO™ Air Purifier

    54 point check list

    Year-Round Efficiency

    Beyond filter replacement, our 54-point inspection includes critical checks like the condenser motor and compressor, as well as drainage to prevent damage. This meticulous care ensures efficient, year-round comfort and significant cost savings.

    Efficiency = Savings

    Neglecting your HVAC system can mean higher utility costs. Our maintenance can boost cooling efficiency by 30% or more, saving energy and money. Plus, it prevents undue stress on dual system units, ensuring longevity.

    Prevent Costly Repairs

    Regular maintenance identifies HVAC issues early, making repairs easier and more affordable. Waiting for peak climate spikes can result in longer service waits and higher costs. Choose proactive maintenance for comfort and savings.

    Honoring Our Heroes

    As a veteran-owned business, we honor heroes with special HVAC service discounts for veterans, active-duty military, and first responders. It’s our way of thanking you for your service. Enjoy savings on parts and service as our token of appreciation.

    Other Popular HVAC Services

    REME HALO™ Whole Home In-Duct Air Purifier (UV Light)

    REME HALO™ Home In-Duct Air Purifier

    Starting at $699 installed

    Warranty: 5 years ballast / 2 years cell

    Reduce Common Allergy Triggers

    Eliminates Pet Odors & Unwanted Smells

    More Details

    The REME HALO® isn’t your typical UV lamp. It’s a game-changer, actively enhancing your home’s air quality. Unlike many air purifiers that simply sit passively or struggle to tackle pollutants effectively, the REME HALO® goes further. It doesn’t just rely on UV light; it incorporates cutting-edge proprietary technologies. One standout feature is its ability to generate low levels of hydrogen peroxide in the circulated air. As it operates throughout your air-conditioned spaces, the REME HALO® efficiently reduces bacteria, viruses, odors, and mold spores in both the air and on surfaces. Experience the transformative impact of a REME HALO® – contact us today for a healthier living environment!


    Ecobee Lite 3 Smart Home Thermostat

    Starting at $319 installed

    Compatible with SmartSensor

    Save up to 23% on annual energy costs

    Control from anywhere on iOS and Android

    More Details

    Introducing the Ecobee3 Lite Smart Home Thermostat, your key to balanced comfort, savings, and energy efficiency. Priced at just $319, installed, this smart thermostat is designed to revolutionize your home climate control. It’s not just about convenience; it’s about keeping your home comfortable while saving up to 23% annually on heating and cooling costs. With seamless control from anywhere on iOS and Android, Apple HomeKit compatibility, and integration with leading smart home ecosystems, it’s a thermostat that adapts to your needs. Plus, enhance your comfort in specific rooms with SmartSensor technology. Be prepared for the future with features like occupancy detection, which automatically manages your temperature and even pauses when doors or windows are open. And for our heroes, we offer special discounts for veterans, active-duty military personnel, and first responders. Trust ecobee for a smarter, more efficient, and comfortable home.


    Mitsubishi Mini Split System

    Starting at $2,999 installed

    Square Footage: 600 sq ft

    Quiet, Ductless A/C

    Warranty: 5 years

    BTU: 16,000

    More Details

    This Mitsubishi Ductless 16K BTU Air Conditioner Mini Split, designed for rooms up to 600 sq ft, offers a host of features to cater to your home or business needs. Not only does this Mitsubishi Ductless Air Conditioner Mini Split provide a cost-effective and eco-friendly cooling solution, but it also grants you the power to control each zone in your home independently, enabling you to conserve energy.

    What sets the Mitsubishi Ductless Air Conditioner Mini Split apart is its room-specific air handlers, which continuously measure return air and make automatic adjustments. This innovative approach ensures precise comfort in every room, eliminating the need for a central thermostat and the inefficiencies associated with traditional cooling systems.


    Satisfaction Guaranteed

    Veteran Values

    Family Owned & Operated

    54-Point Inspection

    Transparent Pricing

    Over 80, 5-Star Reviews

    Service Plans Available

    Increase the Life of Your System

    $500 Off

    New Home Unit Installs

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    Read Our Reviews

    Customer satisfaction is our number one priority. We pride ourselves on Word of Mouth advertising and do our best to live up to our name by being Steadfast in our duty and service.

    We Got You Covered with Financing

    Steadfast Mechanical works with two separate finance systems, to provide our customers with the financial backing you need to stay cool and comfortable.

    How often should I complete an HVAC Service?

    HVAC systems have measures taken to help reduce the amount of dust and debris the system takes on, but in Arizona, with dust storms and wind being a major factor, HVAC Systems take a beating throughout the year. This is why we recommend you to service or tune up your system at least once a year after Haboob season, and sometimes twice for older units.

    What does an HVAC technician do during a tune-up?

    Our technicians are trained to conduct a 54-point inspection of your entire system stress points and data factors. Technicians review run capacitors, check amperage on the compressor(s), review the system for loose or weak points, look for leaks in the drain pan and system, check low and high side Freon pressors, and check for play in the condenser motor. The list goes on. Bottom line, we check the system top to bottom, for just $49.99.

    Is this for swamp coolers and commercial systems?

    Unfortunately no, this offer is specific for residential units. We do handle commercial service, maintenance, and tune-up calls at Steadfast Mechanical, along with new installs.

    To get a custom price and discount, mention STEADFASTCOMMERCIAL when you call, to get 10% off your total invoice. 

    How long does it take to do a service?

    Most service calls can take between 1-3 hours, provided access is uninhibited and the size of the system.

    I had an amazing experience! They were super responsive and they were extremely reasonably priced compared to everyone I shopped. Definitely coming back in the future.

    Justin Chaparro

    Steadfast Mechanical was awesome! They showed up right away even though it’s busy season! They were very professional honest and easy to work with, I highly recommend them you won’t be disappointed.

    Jason Flanders

    This mini split they did in my shop is a game changer! These guys had better equipment, better warranty, and hundreds cheaper than the other bids I got. My friends are jealous how cool it is when we train or wrench even on these crazy hot days. Thanks Brandon, you do great work!

    Joseph Bridges

    Contact Us


    +1 (480) 919-5309

    Serving all of Maricopa County!