Locally Operated Furnace Repair in Mill Valley, CA

When Your System Fails, Mill Valley Calls Leonard HVAC

No overselling, no guesswork — just a Furnace Repair crew that diagnoses it right the first time. Priority scheduling available across Mill Valley and the surrounding zip codes.

✓ Licensed & Bonded
✓ Nights & Weekends Covered
✓ Flat-Rate Quotes
72°
Set & Ready
Professional Furnace Repair technician working in Mill Valley, CA
24/7Dispatch Availability
Same-DayAverage Arrival Window
Neighborhood-TrustedLocal Reputation
100%Satisfaction Backed
What Happens After You Call

What To Expect When You Call +1-866-805-8548

1. Talk To Our Dispatch Team

Our Mill Valley dispatcher asks a few quick questions to gauge urgency and get you the fastest available window.

2. Diagnosis & Upfront Quote

A licensed technician arrives, runs a full diagnostic, and explains exactly what's wrong in plain language.

3. We Fix It And Confirm It's Right

If anything feels off after we leave, a follow-up call gets a technician back out to make it right.

Local & Licensed

A Local Furnace Repair Crew Built for Mill Valley's Climate

Leonard HVAC grew one honest service call at a time in communities like Mill Valley. Our crews carry manufacturer certifications across the major residential and commercial equipment lines.

We're not the biggest name in Mill Valley — we're the crew that answers the phone at 2am when your furnace quits in the middle of a cold snap. Licensing and insurance aren't optional line items for us, and we keep that documentation available on request for every job, big or small.

Mill Valley's climate swings hard, and generic national playbooks don't always fit. That local knowledge shapes how we diagnose problems — it's the difference between a tech who's guessing and a tech who's seen your exact situation a hundred times before.

Ask around Mill Valley and you'll hear the same complaint about a lot of HVAC companies. That's the gap we built Leonard HVAC to close. Every dispatcher, every technician, and every follow-up call is held to the same standard, because a customer who trusts us once tends to call us again — and Mill Valley is a small enough community that reputation travels fast.

Our office team is based locally too, not routed through an out-of-state call center that's never seen a Mill Valley rooftop unit. Our warranty and service history records stay attached to your address, so any future technician who visits already has the full picture.

Fully BondedCoverage that protects your property
24/7 AvailabilityNights, weekends, and holidays included
Upfront PricingWhat we quote is what you pay
Mill Valley-Based CrewsFaster arrival because we're already nearby
Our Services

Furnace Repair in Mill Valley — Done Right, Not Just Done Fast

Whether it's a mid-summer breakdown or a planned system replacement, our Mill Valley techs handle it with the same level of care.

24/7

Same-Day Emergency Dispatch

Breakdowns rarely happen at a convenient time, which is exactly why our emergency line runs 24 hours a day. Our Mill Valley dispatch team prioritizes no-heat and no-cooling calls so a technician is diagnosing your system as fast as physically possible.

  • No-heat and no-cool emergency response
  • Electrical and control board diagnostics
  • Transparent emergency pricing before work begins

Once a technician is on-site, the goal is always a same-visit repair — most emergency calls in Mill Valley get resolved in a single trip, not a multi-day back-and-forth.

24/7 Emergency Furnace Repair experts in Mill Valley, CA
Residential

New System Installs & Full Replacements

Not every repair call ends in a repair — sometimes the honest recommendation is a properly sized replacement. We walk Mill Valley homeowners through financing and rebate options where available before a single piece of equipment gets ordered.

  • Full system replacements, furnace to condenser
  • Smart thermostat setup and integration
  • Post-install performance testing

Every install ends with a performance test, confirming airflow, temperature split, and refrigerant charge are all where they should be before we consider the job finished.

Reliable Furnace Repair contractor in Mill Valley, CA by Leonard HVAC
Business

Business & Facility Heating and Cooling

Downtime in a commercial space costs money every hour a system is offline. Our commercial division services light industrial and warehouse ventilation across Mill Valley, with service agreements built around your operating hours.

  • Multi-zone building system service
  • Preventive maintenance contracts for property managers
  • Priority response tiers for commercial accounts

Property managers working with multiple Mill Valley locations can set up a standing account so every site gets consistent service history and pricing.

Affordable Furnace Repair solutions in Mill Valley, CA
Specialized

Preventive Maintenance & Specialized Solutions

Preventive maintenance is the cheapest repair you'll ever pay for, because it's the one that prevents the bigger bill. Beyond standard tune-ups, we also handle humidifier, dehumidifier, and air purifier installation for Mill Valley households that want more than just temperature control.

  • Seasonal tune-ups, spring and fall
  • Duct sealing and cleaning
  • Discounted repair rates for plan members

We'll show you photos of anything concerning we find, along with a plain-language explanation of what it means and whether it's urgent.

Top rated local Furnace Repair specialists in Mill Valley, CA
What We Promise

The Leonard HVAC Guarantee

Guarantees only mean something if a company actually honors them, so here's exactly what ours covers.

Repairs That Are Guaranteed

Every repair comes with a workmanship warranty explained in plain terms before we leave.

Price Match Commitment

Emergency dispatch never comes with a hidden surcharge sprung on you after the fact.

Not Finished Until You Say So

Our office follows up after major repairs and installs to confirm everything is holding.

Don't Wait Until It Fails

Signs Your Furnace Repair System Needs Attention Now

A little attention to how your system is running can save you a lot of money and discomfort.

Banging, Clicking, or Grinding Sounds

Rattling during startup often means a component has worked itself loose and needs tightening before it causes real damage.

Weak or Uneven Airflow

Weak airflow from the vents often traces back to a clogged filter, a failing blower motor, or leaking ductwork.

Rising Utility Bills

Gradual efficiency loss is easy to miss month to month, but it adds up fast over a season.

Frequent On-Off Cycling

This is one of the warning signs we recommend not waiting on.

Odors Coming From The Vents

Chemical odors may signal a refrigerant leak, which requires a licensed technician to handle safely.

You've Called For The Same Issue Twice

If you're calling about the same problem every few months, the underlying cause likely hasn't been fully addressed.

Why Mill Valley Picks Leonard HVAC

Why Mill Valley Homeowners Keep Our Number Saved

No Surprise Invoices

No inflated "emergency surcharge" games — the number we quote is the number you pay.

Dispatch From Nearby, Not Across Town

Emergency calls get moved to the front of the line automatically.

We Stand Behind Every Repair

We don't consider a job finished until the system is actually performing correctly.

Licensed, Background-Checked Techs

Every technician carries current state licensing and manufacturer training.

Clear Communication

Photos and plain-language notes accompany every diagnostic.

Financing & Maintenance Plans

We'll walk you through what's actually available before you decide.

Real Customer Feedback

What Our Customers Are Saying

A snapshot of the feedback that keeps us accountable.

★★★★★

"I called three other companies first and this was the only one that actually picked up. Fixed on the first visit and explained everything in terms I could actually understand."

Marcus T.
Homeowner in Mill Valley

★★★★★

"We've used them for our maintenance plan for two years now and never had a surprise breakdown. Never once felt like I was being upsold on something I didn't need."

Priya S.
Homeowner in Mill Valley

★★★★★

"Had a full system replacement done and it was the smoothest home project I've had in years. Followed up a week later just to check everything was still running fine."

Michael D.
Mill Valley, CA

★★★★★

"As a property manager, having a company that actually answers after-hours calls is rare. Kept our kitchen running through the weekend rush."

Mill Valley Property Group
Commercial client

★★★★★

"I appreciated that they didn't try to sell me a bigger unit than I needed. Would use them again without hesitation."

Latoya B.
Mill Valley resident

★★★★★

"The tech walked me through what he was checking as he went, which I really appreciated. No overnight surcharge shock — the price matched what dispatch quoted me on the phone."

Christine V.
Mill Valley resident

Common Causes

What's Usually Behind A Breakdown

None of these are unusual or embarrassing — they're just the normal wear and tear that comes with running a system through Mill Valley's seasonal swings.

Dirty or Clogged FiltersWe check this first on nearly every service call
Low Refrigerant ChargeLeaks often develop slowly at joints or coils and go unnoticed until performance drops noticeably
Electrical & Capacitor FailuresUsually a quick, affordable fix once diagnosed correctly
Miscalibrated ControlsA thermostat that's lost calibration or has a wiring fault can make an otherwise healthy system seem broken
Keeping Your System Healthy Year-Round

Getting Your System Ready For The Season Ahead

Mill Valley's seasonal swings put real stress on a system that isn't maintained regularly. Filters should be checked monthly during heavy-use seasons and replaced roughly every 60-90 days depending on your household and any pets.

Clearing debris, leaves, and overgrown landscaping away from an outdoor condenser unit gives it room to breathe and keeps it running efficiently. None of this replaces a professional tune-up, but it does reduce the wear that leads to premature breakdowns between visits.

No Brand Restrictions

We Service Every Major System Type

We also service package units common on manufactured and modular homes throughout the Mill Valley area. If your system was installed by a different company entirely, that's not a problem — we service equipment regardless of who originally put it in, and we'll pull the model and serial information to confirm parts compatibility before any repair begins.

Our Team

Licensed Techs, Not Anonymous Contractors

We don't outsource dispatch to a call center that's never met our technicians.

Trusted Furnace Repair service in Mill Valley, CA - Leonard HVAC

Lead Residential Technician

Handles the majority of Mill Valley installs and specializes in properly sizing equipment for older housing stock.

Trusted Furnace Repair service in Mill Valley, CA - Leonard HVAC

Emergency Dispatch Technician

Runs point on overnight and weekend emergency calls throughout Mill Valley.

Trusted Furnace Repair service in Mill Valley, CA - Leonard HVAC

Commercial Systems Technician

Focuses on commercial rooftop units, multi-zone systems, and facility maintenance contracts.

Before You Call

What You Should Know Before You Book

How quickly can someone get to my house?

Because our trucks are staged near Mill Valley, average arrival windows run faster than what national chains typically offer.

How does your pricing work?

We explain the diagnostic fee upfront and provide a flat-rate repair quote once the issue is identified.

Do you offer 24/7 emergency repair?

Our emergency line runs 24 hours a day, including nights, weekends, and holidays.

Do you carry insurance for work done in my home?

Every technician we send is licensed in accordance with Mill Valley, CA requirements and carries full liability coverage.

How do I know if I need a repair or a full replacement?

As a general guideline, if a system is past 12-15 years old and facing a costly repair, replacement often makes more financial sense.

Do you offer maintenance plans in Mill Valley?

Plan members typically see fewer surprise breakdowns because small issues get caught during routine visits.

What areas around Mill Valley do you serve?

Our dispatch area extends throughout the greater Mill Valley region and nearby towns within Mill Valley, CA.

Do you work on business HVAC systems too?

Yes, we run separate residential and commercial divisions, both fully licensed and equipped for their respective equipment.

What brands and system types do you work on?

Yes, we service systems regardless of who originally installed them.

Can I finance a full HVAC replacement?

Ask about financing during your in-home estimate to see what fits your situation.

How many times a year should my system be serviced?

Twice-yearly maintenance is the standard we recommend given the temperature swings the area sees.

What should I do while I'm waiting for a technician during an emergency?

Beyond basic safety checks, it's best to leave diagnosis to a licensed technician rather than attempting a repair yourself.

Will an emergency call cost more?

Our pricing is explained clearly before dispatch, and any after-hours consideration is communicated upfront — never as a surprise on the final invoice.

What's the average time on-site for a service call?

Most standard repairs are completed in under two hours once the technician has diagnosed the issue and you've approved the quote.

Is my presence required during the appointment?

For most residential visits, yes, an adult should be present to grant access and approve any quoted work.

Local Coverage

Wherever You Are In Mill Valley, We're Close By

Housing stock varies a lot across Mill Valley — older homes often still run original ductwork that needs different care than the sealed, high-efficiency systems going into newer builds.

Larger properties get the same upfront pricing and licensed technicians as a single-family service call, just coordinated at scale.

Payment Options

Spreading Out The Cost Of A New System

We accept standard payment methods for repairs and smaller jobs, and we'll always tell you upfront what a given service is likely to cost so there's no last-minute scramble to figure out payment. If a rebate or local incentive program applies to your Mill Valley installation, our technicians will flag it during the estimate rather than leaving you to track it down after the fact.

Service Coverage

Serving Mill Valley And The Surrounding Area

If your address falls within Mill Valley, CA and near Mill Valley, there's a strong chance we already service your street.

Coverage isn't limited to a single neighborhood or subdivision — our Mill Valley dispatch zone stretches across the metro area and into the surrounding suburbs and unincorporated communities.

Zip codes served in and around Mill Valley: 94941 94942
Mill Valley is a city in Marin County, California, United States, located about 14 miles (23 km) north of San Francisco via the Golden Gate Bridge and 52 miles (84 km) from Napa Valley. The population was 14,231 at the 2020 census.

Zip Codes in Mill Valley, CA that we also serve: 94941 94942

Cities Close To Mill Valley, CA That We Also Serve


Furnace Repair Express #1
★ 4.9 (120+ Reviews)
Dispatch Center, CA
Call +1-866-805-8548
Furnace Repair Express #2
★ 4.9 (120+ Reviews)
Dispatch Center, CA
Call +1-866-805-8548
Furnace Repair Express #3
★ 4.9 (120+ Reviews)
Dispatch Center, CA
Call +1-866-805-8548
Furnace Repair Express #4
★ 4.9 (120+ Reviews)
Dispatch Center, CA
Call +1-866-805-8548
Furnace Repair Express #5
★ 4.9 (120+ Reviews)
Dispatch Center, CA
Call +1-866-805-8548
Furnace Repair Express #6
★ 4.9 (120+ Reviews)
Dispatch Center, CA
Call +1-866-805-8548

Our Services in Mill Valley, CA

Emergency? Call now +1-866-805-8548
🟢 Techs On Duty in Mill Valley, CA Call +1-866-805-8548