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Avatar for Mallard Mechanical
Mallard Mechanical
5.0(
11
)
Air Ducts & Vents - CleanCentral A/C - Service or Repair

Serving Sandstone, MN and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I would recommend Preston and Mallard Mechanical to anybody in the area looking to buy a new furnace/AC, or even just general HVAC maintenance. We closed on our house on a Friday with the AC not working and the furnace on its way out. We called Mallard Mechanical that morning and the equipment was ordered that same day and the install scheduled for the following Tuesday. The day of the install Preston was on site right on time and got our old AC and furnace torn out and the new system put in all in the same day. He was extremely professional and kept a VERY clean work site. He made sure to go over everything about the new system with my wife and I and even took care of setting up the city inspection for the new system. Last but absolutely not least, Mallard Mechanical's prices are extremely fair and I cannot imagine finding better service anywhere else for as good of a price as we got with Mallard Mechanical. Thank you again to Preston and Mallard Mechanical!"
Response time3 hrs
Recommended by88%of homeowners
Avatar for MAXX Mechanical, LLC
MAXX Mechanical, LLC
New to Angi
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Sandstone, MN and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

MAXX Mechanical provides dependable Plumbing and HVAC services for homeowners and businesses throughout Duluth, MN and the surrounding areas. From furnace and boiler repairs to quality installations, our experienced team is ready to keep your property comfortable year-round. We also handle a wide range of plumbing needs, from leak repairs, clogged drains, and fixture replacements to water heaters and other plumbing installations. We focus on prompt response times, quality workmanship, clear communication, and professional service from start to finish. At MAXX Mechanical, we understand that Plumbing and HVAC problems can be urgent. Our team provides 24/7 Emergency services 365 days a year, and we work efficiently to diagnose issues and provide practical solutions. Whether you're needing a small repair, preventative maintenance, or a larger residential or light commercial project, you can count on MAXX Mechanical for reliable service and lasting results.

House Trap Removal
Sump Pump Discharge
Sump Pump Install
Sump Pump Discharge
8 neighbors recently requested a quote
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Sandstone, MN and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Jim responded promptly to my order placed on Angie's List for the Remote Computer Tune Up & Repair Deal.  He cleaned up the computer remotely, which was running very slowly, and required frequent re-boots.  Computer is running much faster now.  Great service.  Would highly recommend.


"
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
JOMAC Mechanical LLC -
4.7(
13
)
Central A/C - InstallCentral A/C - Install - For BusinessDuctless Mini-split A/C - Install or Replace

Serving Sandstone, MN and surrounding areas

In business since 2003

Free estimates

"My wife and I decided to have a split entry heat pump installed, so I contacted 4 contactors. JoMac was first to respond, first to come out, first to submit a bid, and after I accepted the bid, Joe completed the work in short order. Joe listens to the consumer well and is anxious to do a good job on the project; he knows that happy customers mean more business. Joe is polite and outgoing; he even brought cuccumbers for us. Two days after the job was done, Joe called just to see how things were going."
Recommended by100%of homeowners
Showing 1-10 of 24
Air Conditioning questions, answered by experts

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

NATE (North American Technician Excellence) certification is not legally required for HVAC technicians in most areas, but hiring a professional with this certification is highly recommended. NATE-certified technicians demonstrated their expertise and proficiency in different types of HVAC systems, offering assurance of quality service. It's a voluntary certification, yet it indicates a commitment to professionalism and ongoing training. Choosing a NATE-certified technician often means you're working with someone who is up-to-date on industry standards and best practices, which can lead to better service, energy efficiency, and long-term cost savings.

Deciding whether to replace just the AC coil or the entire system depends on the age of your unit and the overall cost. Replacing a coil is less expensive than a full system replacement, but it can still be a pricey repair. If your HVAC system is relatively new and still under warranty, or if the replacement cost is significantly lower than a new system, replacing the coil can be a worthwhile investment that restores efficiency and extends the unit's life. However, for older systems (nearing the end of their 10-15 year lifespan) or those with extensive damage, it is often more cost-effective to replace the entire AC unit. Mismatched coils in an older system can lead to inefficiency and future breakdowns, so a full replacement ensures optimal performance and avoids further costly repairs.

Yes. Your air supply should be balanced. The return and supply ducts need to maintain that balance, and this only occurs because an equal amount of air should be entering and leaving your HVAC system. Changes in pressure, extreme weather, and blocking vents with furniture or your stuff can make the air supply unbalanced and cause your home to get too cold or hot.

As a general rule, you should have your HVAC system professionally serviced at least once a year, though it's best to follow the manufacturer's specific recommendations. Many experts suggest twice-yearly maintenance: once in the spring for the cooling system and once in the fall for the heating system. This is especially recommended for older units, systems with recurring issues, or heat pumps that provide both heating and cooling. Regular service, which can cost between $100 and $550, keeps the system running efficiently, helps prevent costly future repairs, and saves money on utility bills.

The Sandstone, MN homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.