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Mini Splits

How Much Does It Cost To Run A Mini Split? (Per Month Calculator)

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How Much Does It Cost To Run A Mini Split Per Month

Modern mini splits are considered the most efficient type of air conditioning. We are going to look into how much does it cost to run a mini split per hour for 9,000 BTU, 12,000 BTU, 18,000 BTU, 24,000 BTU, 30,000 BTU, and 36,000 BTU mini splits. Based on that, we will look at how much … Read more

Categories AC Calculators And Converters, Mini Splits Leave a comment

Is It OK To Slightly Oversize A Mini Split? What Is ‘Slightly’?

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“You can either go with a 2.5-ton or a 3-ton mini split.” This is a classic HVAC statement when estimating mini split sizes. It prompts the question if it is OK to slightly oversize a mini split heat pump.  We always end up choosing between two mini split capacities, namely: Most optimum size, according to … Read more

Categories Mini Splits Leave a comment

How Many Amps Does A Mini Split Use? (2.3 To 27.3 Amps)

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How Many Amps Does A Mini Split Use calculator and chart

Amps matter. If you have a mini split and need to know how many amps they draw, you have a problem. It’s not all that easy to figure out exactly how many amps does a mini split use. We are going to show you how to answer questions like these quite easily “How many amps … Read more

Categories Mini Splits Leave a comment

How Many Mini Splits Do You Need? (Rooms, Sq Ft, BTUs, Zones)

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“I have a 1,500 sq ft house. How many mini splits do I need?” This is a standard question about the number of mini splits required. A 1,500 sq ft house would need about 30,000 BTU (2.5 ton) of cooling output; that means you would need 1, 2, or 3 mini splits (we talk about … Read more

Categories Mini Splits Leave a comment

How Does A Mini Split Work? (Simple 7 Step-By-Step Explaination)

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Mini split is truly a wonder of modern HVAC engineering. This is the first ductless air conditioning and heating solution. The ability to cool and heat (at extremely high efficiency) is outstanding. Today, we will look at how does a mini split work. We will explain how mini splits can both cool (in the summer) … Read more

Categories Mini Splits Leave a comment

Mr Cool DIY 9k, 12k, 18k, 24k, 36k Breaker Sizes (Specs Sheets)

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What breaker size do you need for a MrCool mini split? That’s quite easily answered. If you are wondering what fuse size (in amps) you need for your MrCool unit, just check the specification sheet. Every MrCool specification sheet has a line with “Maximum Fuse (Breaker)” specs under the “Electrical Parts” section. Here’s the problem: … Read more

Categories Mini Splits 2 Comments

Best DIY Mini Splits: 4 Units That Are Easiest To Install By Yourself

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Let’s quickly illustrate why exactly the best DIY mini split systems are so popular: Installing a 20 SEER 1-ton ductless mini split costs $2,000. Installing a 22 SEER MrCool 1-ton mini split can cost $0. What’s the difference between these two units? The first one was installed by a professional, and the second one was … Read more

Categories Mini Splits 4 Comments

Ductless Mini Split Vs Central Air AC: Which Is Better? (8 Differences)

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In recent years, we see homeowners replacing central air with mini split AC units quite regularly. Especially when you have to decide on an AC system for new construction, you are seeing more and more mini splits vs HVAC units. This has prompted us to make a spec-by-spec overview analysis of mini split vs central … Read more

Categories Central Air Conditioners, Mini Splits Leave a comment

3 Quietest Mini Split AC Units For Bedroom (Below 39.5 dB Noise)

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A lot has been said about the advantages of mini split air conditioners. One of the key advantages (besides super high energy efficiency levels and ductless installation) mini splits have are extremely low noise levels. If you want to use a mini split in the bedroom, however, you would do prefer the quietest mini split … Read more

Categories Mini Splits Leave a comment

5 Best Mini Split AC For Garage (+What Size, SEER, Installation Cost)

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Mini splits are all about efficiency. If you’re looking how to be smart about cooling your garage, the best option is to install a mini split through the garage wall. We are going to cover 5 best mini split AC units for the garage but let’s start by tackling this question: Is a mini split … Read more

Categories Mini Splits Leave a comment
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HVAC metrics:

SEER = (1 × EER100% + 42 × EER75% + 45 × EER50% + 12 × EER25%)/100

EER = BTUcooling/W

HSPF = BTUheating/W

COP = Q (useful heat)/W (input work)

ACH = CFM x 60/Area x Heightceiling

Total Heat (BTU/hr.) = 4.5 x CFM x Δh (std. air)

Sensible Heat (BTU/hr) = 1.1 x CFM x Δt (std. air)

Latent Heat (BTU/hr) = 0.69 x CFM x Δgr. (std. air)

1 HP = 746 Watts

1 kW = 3413 BTU

 

Recent Posts

  • Can You Put A Window Air Conditioner In Sideways? (Why Not + Alternative)
  • Can You Use A Portable AC Without The Hose? (4 Hoseless Methods)
  • How Cold Should An Air Conditioner Blow? (Out Of Vents Temperature)
  • How Much Does It Cost To Run A Mini Split? (Per Month Calculator)
  • Evaporative Cooler Chart (Humidity, Efficiency, Temperature Swamp Coolers)
  • Is It OK To Slightly Oversize A Mini Split? What Is ‘Slightly’?
  • U-Value To R-Value: How To Convert U-Factor To R? (Calculator + Chart)
  • Calculating R-Value: How To Calculate R-Value? (Formula + Units)
  • Air Duct Insulation R-Values: ASHRAE Requirements (R-1.9, R-6, R-8, R-12)
  • 4 Best Outdoor Portable Tankless Water Heaters For Camping, RVs, etc.
  • Rigid Insulation R-Value Per Inch (+ EPS, XPS, ISO Thickness Charts)
  • ISO R-Value Chart: Thickness Of Polyiso Insulation (1-20 Inches)
  • Insulation R-Value Chart: R-Values Per Inch (For 51 Materials)
  • All 9 Types Of Insulation Explained (Materials, R-Values, Applications)
  • Window Too Small For AC? AC Doesn’t Fit Window? (2 Viable Options)
  • Outside AC Unit Not Running But Inside Is? 6 Culprits To Check
  • THHN Vs THWN vs THWN-2 Wires: What Is THWN Wire Anyway?
  • AWG Wire Resistance Calculator With Ohms Law Formula (+ Examples)
  • Extension Cord Wattage Chart: How Many Watts, Amps Cords Handle?
  • R404A PT Chart: Pressure Temperature Chart For -49°F To +150°F
  • How Many Watts Can An Outlet Handle? (110V,120V,220V + 15,20,30A Breakers)
  • How Many Outlets On A 15 Amp, 20 Amp, 30 Amp Circuit? (NEC 210.21)
  • Electrical Feeder Size Chart: 100-400 Amps (NEC 310.12)
  • 6 Gauge Wire Vs 8 Gauge Wire: mm, mm2, Amps Comparison
  • How Many Watts In A 12 Volt Battery? (Calculator + Chart)
  • R134A PT Chart: Pressure Temperature Chart (-49°F To 150°F)
  • Ground Wire Size Chart: NEC Grounding Conductor Size Chart
  • What Temperature To Leave A Vacant House In Summer? (Careful)
  • 1.5 Ton AC Watts And Power Consumption (Calculator + Chart)
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