Your ductwork is the delivery system for every dollar you spend on heating and cooling. Leaky, undersized, or poorly designed ducts can waste a large share of your system’s capacity, leaving rooms uncomfortable and energy bills higher than they should be. RM Mechanical Heating and Air designs, seals, and repairs duct systems built for Sacramento homes.
Owner-operated by Russ since 2007, we install and repair ductwork with our own trained technicians and never use subcontractors. We are bonded and insured, carry CA Lic #889331, and are available Monday through Friday 8AM–7PM and Saturday 8AM–2PM. Call (916) 870-7279 to schedule an evaluation.
What Our Ductwork Services Include
Ductwork is only as good as its design and its seals. We evaluate your entire distribution system — trunk lines, branches, registers, returns, and the connections between them — to find where air is escaping, where it is restricted, and where the layout is fighting your equipment.
Our duct services range from targeted sealing and repair to full system replacement and redesign. We use proper sizing, quality flex and sheet metal components, mastic and mesh sealing, and insulated runs where they belong, so conditioned air reaches the rooms that need it instead of leaking into the attic or crawlspace.
- Duct design, sizing, and full system replacement
- Duct sealing with mastic, mesh, and proper tape
- Leak detection and pressure testing
- Insulation upgrades on attic and crawlspace runs
- Register, grille, and return-air improvements
- Repair of crushed, disconnected, or rodent-damaged ducts
Signs Your Ductwork Needs Attention
Duct problems are often invisible, so homeowners notice the symptoms rather than the cause. If your system seems to run fine but your home never feels balanced, the ducts are a likely culprit.
- Some rooms are always too hot or too cold
- Weak airflow from certain registers
- Dusty air or visible dust streaks around vents
- Higher energy bills with no change in habits
- Whistling, rattling, or roaring sounds from the vents
- Visible damage, disconnected joints, or ducts in a hot attic
Duct problems compound over time. A small leak at a joint grows as pressure pushes more air through it, dust builds up in unsealed runs, and an undersized trunk starves the farthest rooms no matter how hard the system works. Fixing the ducts often solves comfort complaints that equipment upgrades alone never could.
We also address return-air capacity, which many installers overlook. If your system cannot pull air back to the equipment, it cannot push conditioned air out to your rooms, and no amount of new equipment will fix a return-air problem.
Because ductwork runs through attics and crawlspaces, it is also vulnerable to rodent damage, crushed sections, and disconnected joints that are easy to miss. Our inspections include these hidden areas so nothing is overlooked, and we document what we find with photos you can review before approving any work.
Our Process
1. Evaluate
We inspect the full duct system, check for leaks and restrictions, and measure how air is actually moving.
2. Design
You get a clear plan and pricing for sealing, repair, or replacement based on what your system truly needs.
3. Seal & Verify
We complete the work, seal all connections properly, and confirm improved airflow and balance.
Why Choose RM Mechanical Heating and Air
Ductwork is where a lot of HVAC companies cut corners, and it is where we refuse to. Russ has led RM Mechanical since 2007, and our owner-operated model means the crew sealing your ducts is accountable for the result. We do not hide leaks behind tape and hope — we seal them correctly and verify the improvement.
With 2,000+ jobs completed and a 5.0-star reputation, we have seen how much comfort and efficiency is lost to bad ducts, and how much is recovered when they are done right.
- 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
- Proper sealing that protects efficiency and comfort
- Honest guidance on repair versus full replacement
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 do I know if my ducts are leaking?
Uneven room temperatures, weak airflow, and high energy bills are common clues. A pressure test and visual inspection confirm the extent of the problem.
Can you seal ducts without replacing them?
Often yes. If the duct system is structurally sound, targeted sealing and insulation upgrades can dramatically improve performance at a lower cost.
Do you replace ductwork during an AC or furnace installation?
When the existing ducts are undersized, damaged, or leaking badly, replacing them alongside new equipment is the best way to protect your investment. We will advise you honestly.
How long does ductwork take to install?
Most residential duct replacements take one to three days depending on the size and complexity of the system. We confirm the timeline in your estimate.
Improve Comfort With Better Ductwork
Contact RM Mechanical Heating and Air to evaluate, seal, or replace your ductwork. We will show you where your system is losing air and how to fix it for good.
Call (916) 870-7279 now to get started.