DO HVAC, Inc

Is this your business?
Claim your listing to verify your info and earn a verified badge.
Claim This BusinessAbout DO HVAC, Inc
DO HVAC, Inc operates as Danny Oliver's Heating, Ventilation and Air Conditioning in Nevada City, California, serving the surrounding communities of Penn Valley and Grass Valley. With a perfect 5-star rating across three verified client reviews, this contractor has established itself as a trusted name for residential and commercial heating and cooling solutions in the Sierra foothill region. The business handles everything from routine maintenance and system repairs to complete equipment replacements, offering both traditional forced-air systems and modern mini-split heat pump configurations.
What distinguishes this contractor is the personalized approach to each customer's situation. Rather than pushing immediate full-system replacements, the team evaluates existing equipment and works to optimize performance through targeted repairs and tune-ups. Financing options are available for major purchases, and the company assists customers with navigating energy-efficiency upgrades that may qualify for utility rebates. Seasonal maintenance programs include spring and fall checkups to prepare systems for summer cooling and winter heating demands.
Customer testimonials reveal specific scenarios that illustrate the company's commitment. When Linda J Randall's heater failed on New Year's Eve during COVID supply shortages, Danny Oliver located a replacement unit and navigated permitting processes to restore heating during winter. For Cheryl Z, the contractor continues maintaining an aging system rather than recommending costly premature replacement, demonstrating a customer-first philosophy focused on practical solutions over aggressive upselling.
What Customers Say
All three published reviews award five stars, with the contractor named Danny Oliver in each testimonial. Positive comments consistently mention honesty, diagnostic skill, and proactive seasonal maintenance calls. Both reviews describe scenarios involving emergency repairs and older equipment, highlighting the contractor's willingness to work with existing systems rather than defaulting to replacement recommendations.
Working Hours
| Sunday | Closed |
| Monday | 9 AM–5 PM |
| Tuesday | 9 AM–5 PM |
| Wednesday | 9 AM–5 PM |
| Thursday | 9 AM–5 PM |
| FridayToday | 9 AM–5 PM |
| Saturday | Closed |
Services
Heating System Installation & Repair
New furnace and heat pump installations, including emergency replacement services and combustion chamber repairs.
Air Conditioning Services
Cooling system installation, repair, and maintenance for residential and commercial properties.
Mini-Split Heat Pump Systems
Ductless mini-split installations offering zoned heating and cooling without extensive ductwork.
Ventilation Improvements
Indoor air quality assessments and ventilation system upgrades, including high-efficiency filtration.
Preventive Maintenance Programs
Seasonal tune-ups scheduled spring and fall to optimize system performance and extend equipment lifespan.
System Optimization & Tune-Ups
Diagnostic services and adjustments to improve efficiency of existing heating and cooling equipment.
Energy-Efficient Upgrades
Assessment and installation of upgrades that reduce energy consumption and utility costs.
Commercial HVAC Services
Heating, cooling, and ventilation solutions for businesses in Nevada City and surrounding areas.