AC Installation in Sacramento, CA | RM Mechanical Heating and Air

A new air conditioner is a major investment, and the way it is installed matters just as much as the equipment you choose. RM Mechanical Heating and Air designs and installs central air conditioning systems built for Sacramento’s long, hot summers — sized correctly, sealed tightly, and charged precisely so you get the efficiency and comfort you paid for.

We are owner-operated by Russ and have served the Greater Sacramento area since 2007. Every AC installation is completed by our own trained technicians with no subcontractors, and we back our work with CA Lic #889331 and full bonding and insurance. Call (916) 870-7279 to schedule a free installation estimate.

What Professional AC Installation Includes

Proper installation is a complete, measured process — not just setting a condenser on a pad and connecting a line set. We start with a load calculation to determine the right tonnage for your square footage, insulation, window exposure, and duct system, then match the indoor coil, outdoor unit, and thermostat so the system runs as a balanced whole.

From there we build a clean, code-compliant install: correct refrigerant line sizing and brazing, a nitrogen pressure test and deep vacuum, precise refrigerant charge by weight, condensate management, and a verified electrical connection. When we finish, we commission the system and walk you through operation, filter care, and warranty details.

• Manual J load calculation and equipment sizing
• High-efficiency condenser, coil, and thermostat installation
• New line set, pad, disconnect, and code-compliant electrical work
• Nitrogen pressure testing and vacuum before charging
• Accurate refrigerant charge verified by superheat and subcooling
• Permits, inspections, and manufacturer warranty registration

Signs It Is Time for a New AC Installation

Air conditioners rarely fail without warning. If your system is 12 to 15 years old, needs frequent repairs, or simply cannot keep up on triple-digit days, replacement is often the smarter long-term decision. We will always tell you honestly whether a repair can buy you more time or whether a new installation is the better value.

• Your AC is 12+ years old and facing rising repair costs
• Rooms never reach the temperature set on the thermostat
• Repairs are becoming frequent or parts are hard to source
• Refrigerant (R-22 or R-410A) leaks keep returning
• Energy bills climb every summer without more usage
• You are remodeling, adding square footage, or replacing a failed unit

Choosing the right equipment is a balance of efficiency, budget, and how long you plan to stay in your home. A higher-SEER2 system costs more up front but can trim summer energy use, while a well-matched mid-range unit may deliver the best overall value for your situation. We lay out both paths side by side so the decision is yours.

We also look at the parts of your home that affect cooling performance beyond the box itself: attic insulation, window shading, and duct condition. Addressing those details during installation helps your new system deliver its rated capacity instead of fighting heat gain and duct losses.

Our Process

Why Choose RM Mechanical Heating and Air

Installation quality is where most HVAC problems begin, which is why we treat every install like it is going into our own home. Russ personally oversees the company, and because we never use subcontractors, the technicians who set your equipment are the same people accountable for the result.

We have completed more than 2,000 jobs and hold a 5.0-star reputation across the Sacramento region. That track record comes from doing the unglamorous work right — load calculations, sealed ducts, and precise charging — so your new system performs for years.

• Owner-operated by Russ since 2007 with direct oversight on every job
• Bonded and insured, CA Lic #889331
• No subcontractors, ever — our own trained technicians do the work
• 5.0-star reputation built on 2,000+ completed jobs
• Mon–Fri 8AM–7PM and Sat 8AM–2PM scheduling for real-world convenience
• Free, no-pressure installation estimates
• Correct sizing that protects efficiency and equipment life

Brands We Work With

We install, service, and repair equipment from the industry’s most trusted names, including Carrier, Lennox, Trane, Rheem, Goodman, Mitsubishi, Daikin, and Fujitsu. Because we are not tied to a single manufacturer, we can match the right equipment to your home, ductwork, and budget instead of pushing one brand on every customer.

Frequently Asked Questions

How long does an AC installation take?

A standard residential change-out is typically completed in one day. Installations that involve new ductwork, electrical upgrades, or a full system redesign may take two to three days. We confirm the timeline in your written estimate.

What size air conditioner do I need?

Size is determined by a load calculation, not a guess based on square footage alone. Insulation, window area, ceiling height, and duct condition all affect the result. We run the numbers so your system is neither oversized nor undersized.

Do you offer high-efficiency and variable-speed systems?

Yes. We install everything from standard single-stage units to high-SEER2 variable-speed and inverter systems, and we will explain the trade-off between upfront cost and long-term energy savings.

Is a permit required for AC installation in Sacramento?

In most cases yes, and we handle the permitting and inspection process for you as part of the project.