HVAC Company in San Marcos, CA: Repair, Installation & Commercial Service

Morrison Mechanical Heating & Air Conditioning Services is a licensed HVAC company serving San Marcos, CA — covering residential AC repair, new system installation, replacement, and commercial HVAC work. Based in Fallbrook (CSLB License #1050743), the team responds across North County with same-day service when systems fail and free estimates on new installations. Financing is available through Optimus. Call (760) 405-5716 to schedule.

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Inland San Marcos summers run hot — extended runtimes strain compressors, capacitors fail in afternoon heat, and undersized systems can’t keep up with second-story bedrooms. Morrison Mechanical diagnoses and resolves these issues directly, with itemized repair quotes and fixed-price installation estimates given before any work begins.

AC Repair in San Marcos, CA

Morrison Mechanical handles AC repair across San Marcos, including same-day diagnostics during business hours and 24/7 emergency response when a system fails outside them. Technicians arrive in stocked trucks, which means most common failures are repaired on the first visit instead of scheduled out a week.

  • Same-day diagnostics on capacitors, contactors, and compressors
  • Refrigerant leak detection and recharge (R-410A and legacy systems)
  • Thermostat replacement and smart thermostat installation
  • Evaporator coil cleaning and condenser repair
  • 24/7 emergency AC repair across San Marcos and North County

Call (760) 405-5716 for AC repair in San Marcos — same-day appointments available.

AC Installation & Replacement in San Marcos, CA

When a system is beyond repair or replacement makes more financial sense, Morrison Mechanical handles new AC installation across San Marcos:

  • Free in-home estimates with proper sizing and load calculation
  • Central AC, heat pump, and ductless mini-split installation
  • AC ductwork inspection, sealing, and replacement when needed
  • Optimus financing available with approved credit
  • Fixed-price quotes — no surprise charges after work begins

Replacement is often the right call when repair costs exceed about half the price of a new system — especially on older units or systems still running R-22 refrigerant.

When to Replace Instead of Repair

  • The system is more than 10–12 years old
  • Repair quotes approach half the cost of a new unit
  • Energy bills have climbed without a clear cause
  • The unit still uses R-22 refrigerant (no longer manufactured)
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Morrison Mechanical also handles installation and replacement in Fallbrook, Vista, and Oceanside, CA. Call (760) 405-5716 for a free installation estimate in San Marcos.

Key Takeaways

  • Same-day AC repair available across San Marcos and North County
  • Free, fixed-price estimates on new AC installation and replacement
  • Commercial HVAC contracts available for ongoing maintenance
  • CSLB License #1050743 — Optimus financing on qualifying installations

Commercial HVAC in San Marcos, CA

Morrison Mechanical services commercial HVAC for offices, retail spaces, restaurants, and light industrial buildings throughout San Marcos. Whether the site uses rooftop package units, split systems, or VRF, the team handles diagnostics, scheduled maintenance, emergency response, and full replacement planning:

  • Commercial AC and rooftop unit repair, including after-hours service
  • New commercial HVAC installation and system replacement
  • Scheduled preventative maintenance contracts (quarterly, semi-annual, annual)
  • Indoor air quality, ductwork, and ventilation inspections

Call (760) 405-5716 to schedule commercial HVAC service in San Marcos or request a maintenance contract quote.

Frequently Asked Questions

How much does AC repair cost in San Marcos, CA?

AC repair costs in San Marcos vary based on which part has failed, the age of the system, and refrigerant type. Capacitor or contactor replacements sit at the lower end; compressor and evaporator coil work runs higher. Morrison Mechanical charges a flat diagnostic fee and provides an itemized quote before any repair work begins — no surprise charges after the fact. Call (760) 405-5716 for same-day diagnostics.

The rule most HVAC contractors use: if the repair cost exceeds about 50% of the cost of a new system, replacement is usually the better long-term decision — especially if the unit is more than 10–12 years old or still uses R-22 refrigerant. Morrison Mechanical provides an honest assessment after diagnosing the failure, including a side-by-side cost comparison so you can decide without pressure. Free replacement estimates are available.

Yes — Morrison Mechanical offers 24/7 emergency AC repair across San Marcos and North County. When a system fails outside business hours, dispatch is handled through the main line at (760) 405-5716. Same-day repair is the default during normal hours, and after-hours dispatch is available for total failures.

Most standard residential AC installations are completed in one day once equipment is on hand. Equipment availability depends on the model — common Carrier, Trane, and Goodman units can typically be scheduled within a week, sometimes sooner. Replacement of an emergency-failed system can often be expedited. Financing through Optimus can be arranged before installation day.

Yes — Morrison Mechanical handles commercial HVAC repair, installation, and preventative maintenance for offices, retail, restaurants, and light industrial buildings in San Marcos. Maintenance contracts are available on quarterly, semi-annual, and annual schedules. Call (760) 405-5716 to discuss a site visit and quote.