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TRUSTED BY DOUGLAS, MI HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon52
    Verified heating oil services reviews

Find Heating oil pros in Douglas

Avatar for SULLIVAN Heating Cooling Plumbing

SULLIVAN Heating Cooling Plumbing

4101 40th Street SE, Suite 1
5.00(
3
)
Approved Pro

SULLIVAN Heating Cooling Plumbing

4101 40th Street SE, Suite 1
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
218 local quotes requested

SULLIVAN Heating Cooling Plumbing is West Michigan's most trusted provider for residential customers. We specialize in the installation, repair, maintenance, and emergency services of HVAC and plumbing systems, ensuring year-round comfort and energy efficiency. With a team of certified technicians, and a commitment to quality service, we deliver reliable solutions tailored to each client’s needs. Whether it’s keeping your home warm in those harsh Michigan winters or cool in the dog days of summer, we’re here to help. So remember, When Your Comfort's in Trouble, Call SULLY on the Double!

"Great every professional"

Ed P on August 2025

SULLIVAN Heating Cooling Plumbing is West Michigan's most trusted provider for residential customers. We specialize in the installation, repair, maintenance, and emergency services of HVAC and plumbing systems, ensuring year-round comfort and energy efficiency. With a team of certified technicians, and a commitment to quality service, we deliver reliable solutions tailored to each client’s needs. Whether it’s keeping your home warm in those harsh Michigan winters or cool in the dog days of summer, we’re here to help. So remember, When Your Comfort's in Trouble, Call SULLY on the Double!

"Great every professional"

Ed P on August 2025


Avatar for Petro Plumbing & Mech.

Petro Plumbing & Mech.

3111 Red Clover Road
4.71(
7
)

Petro Plumbing & Mech.

3111 Red Clover Road
4.71(
7
)
Customers say: Quality work
29 years of experience

Petro Plumbing is a family owned business with over 20 years of experience in residential, commercial, and industrial plumbing. From drain cleaning to bathroom remodeling to industrial builds, there's no project too big or too small.

"Petro Plumbing & Mechanical are the quintessential professionals."

Matthew W on February 2021

Petro Plumbing is a family owned business with over 20 years of experience in residential, commercial, and industrial plumbing. From drain cleaning to bathroom remodeling to industrial builds, there's no project too big or too small.

"Petro Plumbing & Mechanical are the quintessential professionals."

Matthew W on February 2021

Heating Oil questions, answered by experts

Most maintenance checks take 2-5 hours, though extensive repairs may take longer.

There are three main types of heat pumps. An air-source heat pump system is the most common and has two parts—an indoor air handler unit and an outdoor heat pump unit. A ductless heat pump system functions similarly to an air-source heat pump system but doesn’t need ductwork to distribute the air. A geothermal heat pump system pulls heat from the ground to help heat your home.

NATE-certified technicians may charge slightly higher service fees compared to non-certified technicians. This is because NATE certification signifies a higher level of expertise and professionalism, often leading to more efficient and effective HVAC repairs and installations. While the upfront cost may be marginally higher, NATE-certified technicians can potentially save you money in the long run by reducing energy consumption, preventing frequent breakdowns, and extending the life span of your HVAC system. When looking for a local HVAC company to hire, it never hurts to ask about NATE certifications.

DIY maintenance like filter cleaning is possible, but professional servicing ensures proper pressure, refrigerant levels, and loop performance.

A geothermal heat pump system will take about 10 years to pay for itself, and it has a life span of anywhere from about 25 to 50 years. Installing a geothermal heat pump will cost about $14,250 upfront, but it can reduce your energy bills by around 65% when compared to a conventional HVAC system.

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