Safe Clean Home Guarantee: Protective measures and cleanup standards followed on every visit.
Plumber and HVAC Services in Boulder, CO
Mountain Valley Plumbing, Heating and Cooling provides professional plumber and HVAC services in Boulder, CO, including repairs, replacements, and system upgrades for plumbing, heating, and cooling equipment. Our technicians handle everything from urgent pipe repairs to high-efficiency heat pump upgrades that may qualify for Xcel Energy rebates. We understand the infrastructure challenges found across Boulder neighborhoods, from aging clay sewer lines near Mapleton Hill to newer residential systems in Gunbarrel.
Our team maintains a 4.9-star rating backed by more than 750 Google reviews, and we bring the same service standard to homes throughout North Boulder, South Boulder, and the Chautauqua area. Homeowners can schedule plumbing and HVAC service through one trusted local team instead of coordinating multiple contractors.

Why Boulder Homeowners Trust Mountain Valley
Our Safe Clean Home Guarantee
Inviting a plumbing or HVAC technician into your home requires trust. Mountain Valley’s Safe Clean Home Guarantee establishes clear service standards designed to protect your property during every visit. Our technicians follow consistent procedures intended to keep work areas clean, organized, and safe throughout the repair process.
If a technician causes a leak or property damage during service, we correct the issue at no charge and provide a $100 dinner gift card as part of the company’s guarantee policy. Our team also uses floor protection on every job and performs a final walkthrough before leaving the home.
Every visit includes:
- Protective shoe covers worn inside the home
- Work area coverings for floors and furniture
- Thorough cleanup after every repair
- Final inspection for new leaks before departure
These standards help Boulder homeowners feel more confident scheduling plumbing and HVAC work in occupied homes. Mountain Valley applies the same cleanup and protection procedures across routine repairs, equipment replacements, and larger installation projects.
Upfront Flat-Rate Pricing for Every Job
Unexpected pricing is one of the most common frustrations homeowners experience during plumbing or HVAC repairs. Mountain Valley uses flat-rate, job-based pricing so customers receive a clear written quote before any work begins. Once the scope of work is approved, the quoted price remains consistent unless additional issues are discovered and discussed with the homeowner first.
If conditions change after accessing the plumbing or HVAC system, our technicians review the updated findings with the homeowner before continuing work. Several factors can influence the final quote, including:
- Job complexity and accessibility of the system
- Required replacement parts or specialty materials
- Current building codes and safety requirements
- Age and condition of the plumbing or HVAC equipment
For larger repairs or full-system replacements, our technicians can walk you through available equipment and installation options during the diagnostic visit. Schedule an appointment online to receive a customized quote for your home.
Boulder Rebates and Heat Pump Electrification
Boulder homeowners often prioritize energy efficiency and lower emissions, but Xcel Energy rebate programs can involve detailed equipment and documentation requirements.Qualifying systems must meet utility specifications and local standards.
Mountain Valley helps homeowners navigate those requirements while coordinating the technical aspects of the installation process. We guide you through each step of the residential electrification process:
1
Identifying equipment that meets Energy Star and local efficiency tiers.
2
Verifying electrical load capacity and coordinating necessary permits.
3
Preparing the invoices and performance data sheets required for claim submission.
4
Comparing standard and cold-climate heat pump models for your home’s footprint.
Modern heat pumps can provide both heating and cooling from a single system, making them a practical option for Front Range homes.
Cold-climate models maintain reliable performance through Colorado winters while also improving cooling efficiency during warmer months. We offer heat pump installation alongside traditional furnace options so homeowners can compare multiple solutions during the same consultation.
Choosing between a traditional replacement and a full electrification upgrade depends on factors such as existing ductwork, electrical panel capacity, insulation, and long-term comfort goals. Our technicians review those considerations during an on-site evaluation before recommending equipment options for your home.
Expert HVAC Repair for Boulder Homes
Boulder homeowners commonly experience two types of HVAC problems: sudden system failures that stop heating or cooling altogether, and ongoing performance issues such as short cycling, airflow imbalance, or noisy operation. Systems that struggle to maintain temperature or cycle too frequently often indicate underlying mechanical problems that should be addressed before they lead to larger failures.
Precise Diagnostics and Upfront Pricing
Our technicians use professional diagnostic equipment to identify the root cause of heating and cooling issues before recommending repairs. Every service call follows a structured process focused on safety, efficiency, and clear communication.
Every repair visit includes:
- System performance testing
- Flat-rate pricing before work begins
- Professional replacement parts matched to the system
- Post-repair safety and efficiency checks
At Boulder’s elevation, combustion appliances require proper venting and air intake calibration to operate safely in thinner air. Our technicians prioritize those safety checks during furnace repair and heating diagnostics to help prevent exhaust or combustion issues. During warmer months, we also provide professional air conditioning service to help cooling systems operate efficiently through high summer temperatures.
For furnace repair, AC service, or any heating issue, call or request a visit online.

Plumbing Solutions for Historic and Modern Boulder Homes
Boulder neighborhoods such as Mapleton Hill and Chautauqua often present unique plumbing infrastructure challenges. Older properties may still contain clay sewer lines, aging galvanized piping, or mechanical spaces designed for outdated equipment. Our technicians adapt repair strategies to historic materials while still bringing plumbing systems up to current code requirements where necessary.
Historic homes frequently experience recurring drain problems caused by root intrusion, corrosion, or aging sewer infrastructure. Many older Boulder properties also have tight utility spaces that require careful measurements during water heater replacement or plumbing upgrades.
Whether the issue involves a leaking valve behind plaster walls or a deteriorating sewer line, our technicians evaluate the system first to reduce unexpected repair complications and pricing changes. Our residential plumbing services cover:
- Water heater repair and replacement for tank and tankless systems
- Professional drain cleaning and sewer line services
- Leak detection and pipe repair
- Fixture installation and plumbing upgrades
Different piping materials, including copper, galvanized steel, and PEX, can affect long-term repair planning in Boulder homes. Our technicians explain how those materials impact maintenance, replacement timelines, and future upgrades so homeowners can make informed decisions about their plumbing systems
Local Dispatch and Service Areas for Boulder
Mountain Valley operates from its Longmont headquarters, located roughly 30 minutes from most Boulder neighborhoods. That proximity allows our team to provide reliable same-day plumbing and HVAC service throughout the Boulder area without overpromising exact arrival windows.
Our standard service hours are Monday through Friday from 8am to 6pm and Saturdays from 8am to 5pm. While we are not a 24/7 emergency provider, urgent repair requests are prioritized during active business hours.
We serve:
Working with a fully staffed company can provide more scheduling consistency than relying on a single-truck operator with limited availability. Our licensed technicians arrive in stocked service vehicles prepared to complete many plumbing and HVAC repairs during the initial visit whenever possible.
Book an appointment online or review our full list of plumbing, heating, and cooling services to find the right solution for your home.
Frequently Asked Questions About Boulder Plumbing and HVAC
Do you offer same-day plumbing or HVAC service in Boulder?
We provide same-day plumbing and HVAC service during standard business hours based on technician availability. Our team dispatches from Longmont and commonly services neighborhoods throughout North Boulder, South Boulder, and Gunbarrel within the same day.
Because repair schedules can change throughout the day, we do not guarantee exact arrival windows. Current service hours are Monday through Friday from 8am to 6pm and Saturdays from 8am to 5pm.
Are you a 24/7 emergency plumber in Boulder?
We do not provide 24/7 emergency plumbing or HVAC service. If you experience a major plumbing leak after business hours, locate and shut off the home’s main water valve to help minimize flooding until service is available.
For heating failures during extreme cold conditions, use a safe secondary heat source if necessary and contact our office to schedule the earliest available appointment. Urgent repairs are prioritized during operating hours.
How does flat-rate pricing work for repairs?
Mountain Valley uses flat-rate pricing based on the scope of the repair rather than hourly billing. Before work begins, a technician performs a diagnostic evaluation and provides a written quote outlining the recommended repair and associated costs.
Homeowners approve the scope of work before repairs begin. Pricing typically includes labor, required parts, and applicable code-related work associated with the repair.
Can you help with Xcel Energy rebates for a heat pump or high-efficiency upgrade?
Yes. We guide homeowners through the Xcel Energy rebate process for high-efficiency heating and cooling equipment. Electrification programs have specific requirements around unit efficiency ratings and installation methods that must be met for a successful claim. Our team identifies qualifying systems and prepares the documentation, including performance data sheets, needed for your application.
Are heat pumps worth it in Boulder, CO?
Heat pumps are an effective option for Boulder residents who want both heating and cooling from a single system while improving efficiency. Modern cold-climate models perform well through Colorado winters and offer a sustainable alternative to gas furnaces. Whether one makes sense for your home depends on existing ductwork, electrical panel capacity, and your comfort priorities. We evaluate those factors during an on-site consultation.
What plumbing services do you handle most often in Boulder?
Our team handles water heater repair and replacement, drain clearing, leak detection, fixture installation, and sewer line diagnostics most frequently. Because Boulder has a mix of historic and modern homes, we are experienced working with various piping materials and older infrastructure. For a full list of our capabilities, visit our plumbing services page.
Ready to Schedule Plumber and HVAC Services in Boulder, CO?
Mountain Valley Plumbing, Heating and Cooling is located approximately 30 minutes from Boulder with licensed technicians, stocked service vehicles, and flat-rate pricing provided before work begins. Whether you need drain repair, furnace service, AC repair, or a full heat pump installation with Xcel rebate support, our team has experience working in homes throughout Boulder neighborhoods.






