Ductless heat pumps (mini-split heating systems) provide powerful, energy-efficient comfort without the need for traditional ductwork.
Whether you need ductless heating installation, repair, or multi-zone system setup, Cronus Service delivers professional results with fast diagnostics and same-day repairs in most cases.
What We Offer and Deliver
Complete diagnostic for ductless heat pumps, including sensors, coils, refrigerant pressure, and communication
Testing of indoor wall-mounted, floor-mounted, and ceiling cassette units
Outdoor heat pump inspection including inverter control, fan motor, and compressor
Line set and refrigerant check for leaks, balance, and heating efficiency
Installation or replacement of indoor heads and multi-zone systems
Full performance test in heating mode with temperature and airflow verification
Stages
Browse by category and find the service you need:
Stage 1
We review your home’s heating requirements and determine the correct size and placement for indoor units and outdoor modules.
Book request
Stage 2
Technicians mount indoor units securely, connect line sets, set drains, and verify zone heating performance.
Stage 3
We install or repair outdoor inverter heat pumps, connect line sets, and ensure proper refrigerant operation.
Stage 4
We check refrigerant levels, electrical communication, defrost cycle operation, and overall heating efficiency.
Stage 5
We verify heating output, cycle response, thermostat performance, and explain any recommended maintenance.
Tip
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Ductless systems add targeted heating without modifying existing ductwork.
Ductless heat pumps use inverter technology for efficient heating.
Ideal for spaces without ducts or with poor airflow.
Multi-zone ductless systems solve comfort imbalance instantly.
Pro Tip:
Even a minor refrigerant issue or dirty sensor can reduce heating performance dramatically. If your system takes longer to heat or cycles frequently, it’s often an early sign that maintenance or repair is needed. Prompt service restores heating efficiency and protects your indoor heads from long-term wear.
Ductless Heating Systems Service Description
Ductless heating systems (mini-split heat pumps) are some of the most efficient heating options available. Instead of burning fuel like a gas furnace, ductless systems move heat using electricity — providing warm, comfortable air with significantly lower energy consumption. They are ideal for homes without ductwork, homes with additions, and rooms needing supplemental heat.
If your ductless system blows lukewarm air, cycles frequently, or struggles to heat certain zones, it may be due to low refrigerant, dirty coils, or failing sensors. Reduced airflow from the indoor unit often means clogged filters or blower issues.
Unusual noises such as clicking, buzzing, or rattling may signal a loose fan wheel, dirty blower, or outdoor compressor issue. Water leakage from indoor units is a sign of a drain blockage or improper installation.
If the system shows error codes on the indoor head, it usually means communication issues or thermistor failure.
• Weak heating output
• Frozen or dirty outdoor heat pump
• Blower motor or fan wheel problems
• Electrical or communication errors between units
• Low refrigerant or line set leaks
• Dirty coils reducing heating efficiency
• Faulty sensors or thermistors
• Water leaks from indoor units
• Short cycling or system not reaching set temperature
• Multi-zone systems not responding properly
Sacramento winters are mild, making ductless heat pumps extremely efficient — especially during cold mornings where they operate at peak performance. Inverter-driven heating reduces utility costs and provides faster warm-up times than central HVAC systems. Multi-zone ductless systems also eliminate the uneven heating common in multi-level homes.
Ductless heating is especially cost-effective for ADUs, garages, home offices, and older homes without ducts.
Repair is best when:
• Your ductless system is under 10–12 years old
• Issues involve sensors, electrical problems, or refrigerant balance
• Indoor units still respond well
Replacement makes more sense when:
• The system is 12–18+ years old
• Major components (compressor, inverter board) fail
• You need additional zones or improved efficiency
• Repairs exceed 30% of replacement cost
Our technicians are certified in ductless systems from brands like Mitsubishi, Daikin, Fujitsu, LG, and Gree. We perform diagnostics, refrigerant balancing, communication testing, and heating performance optimization. Most repairs are completed the same day in most cases, depending on part availability.
We make sure your ductless heating operates quietly, efficiently, and reliably through the winter season.
Whether your ductless system needs repair, maintenance, or new installation, Cronus Service delivers expert results across Sacramento. We help homeowners achieve consistent, energy-efficient heating with modern ductless heat pump systems.
Serving Sacramento, Roseville, Rocklin, Lincoln, Granite Bay, Folsom, El Dorado Hills, Elk Grove, and nearby areas.
Consultation
Send us a quick request — we’ll get back to you within 15 minutes.
You’ll receive a detailed cost estimate
We’ll help you choose the right equipment
We’ll answer all your questions
(!) No pressure. No hidden conditions. Just clear, professional service.
Top rated
Certified and recognized as a leader in quality and reliability.
Gallery
Real installations. Real homes. Real results
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Reviews
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
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Highly recommend Cronus Service! AC unit was not working and was able to get a serviceman from Cronus Service for a same day FREE diagnostic. Other repair companies charged upwards of $200 just for the service. Upon arrival (communication was very clear and crisp), Alex took a look at our system and diagnosed the issue right away. He took time to explain everything that was happening and what his recommended fixes were. The quoted cost was very fair and he had the parts ready in his truck to fix right away. Even included a free tune up!
Denys added extended ductwork to a room that didn't have central unit hooked up! But now it's up and running!! Awesome job for only one man to do the project!!! Hopefully will last awhile! No more TOO HOT or TOO COLD in the room! JUST RIGHT!!!DENYS IS DA MAN!!!Thanks Denys!!!
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
I requested quotes from five AC companies and most of them were overpriced- the highest was over $25k. There were others that were less. Cronus service came out the lowest, so I went with them. Sergei, Dennis, and Alex were very professional. They actually shook my hand and introduced themselves. It was a two day install, temps were hot but they kept on working and didn't stop until the install was completed. At the end of the day this company and the workers at top notch. You can trust them, no gimmicks or stings attached.
FAQ
Weak heating is often caused by dirty coils, low refrigerant, clogged filters, or failing sensors. Ductless heat pumps rely on precise refrigerant transfer and clean coils to operate efficiently. When the outdoor unit struggles to extract heat, performance drops quickly. A professional diagnostic identifies whether the issue is refrigerant-related, mechanical, or electrical.
Most ductless systems last 12–20 years depending on usage and maintenance. Sacramento’s climate is ideal for ductless systems because winters are mild and summers are manageable. Regular cleaning of filters, coils, and drains helps extend system life significantly.
Yes — in most cases. Many ductless systems require simple repairs like sensor replacements, drain clearing, coil cleaning, or capacitor replacement. If specialized boards or blower components are needed, we may need to order manufacturer-specific parts. While waiting, we stabilize the system to prevent further damage.
Yes — modern ductless systems are engineered for cold-weather performance, especially in climates like Sacramento. While extreme freezing conditions can reduce output, Sacramento’s winter temperatures are generally mild, making ductless heating efficient and reliable year-round.
Rattling usually indicates loose panels, dirty blower wheels, or internal components shifting due to age. Clicking or buzzing sounds may be caused by electrical components cycling improperly. Because ductless systems sit directly inside the room, noises can seem louder than they are. A technician will tighten, clean, or replace components causing noise.
Repair is best when the unit is under 10–12 years old and the issue is electrical, refrigerant-related, or mechanical. Replacement may be a better choice if your system is aging, needs major components, or no longer heats effectively. We evaluate system age, performance, and repair cost before providing guidance.
Contact US
Licensed, insured, and fully certified
We work with equipment from all major brands
In-house team — no subcontractors, no middlemen
Transparent estimates and fixed pricing before work begins
Keeping the best prices in the area, apply rebates
Ongoing service, repairs, and support after installation
Consultation
Send us a quick request — we’ll get back to you within 15 minutes.
You’ll receive a detailed cost estimate
We’ll help you choose the right equipment
We’ll answer all your questions
(!) No pressure. No hidden conditions. Just clear, professional service.
Your Local Experts in HVAC, Electrical, Solar, Plumbing and Construction. Serving Homes and Businesses Across Sacramento, Yolo, El Dorado & Placer County
Cronus Service Inc. © 2025
Our manager will contact you to advise you and answer all your questions.
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