Become a TFP Supporter Welcome to our new server and new forum software. Pool School
Results 1 to 11 of 11

Thread: ShopVac Vs Compressor for Pool/Irrigation system closing

  1. #1
    Senior Member
    Join Date
    Sep 2010
    Posts
    226

    ShopVac Vs Compressor for Pool/Irrigation system closing

    Hi,

    I own a 18x36 inground pool, as well I have a large irrigation system for automatic watering of my lawn.

    I'm tired of the expense of closing both equipment, we're a large family and money is tight and I need to start saving where I can, these guys come in and leave pretty quickly and take a lot of my cash with them, I want to man up and start doing this myself.

    Now I often hear about people using Shopvacs or compressors to close their pools, can someone with experience on closing both, please recommend what I should be buying that would work great in either application, would be great if you could recommend specific power requirements so I buy one that is powerful enough and does it in a good timeframe.

    Thanks in advance for any feedback!
    18' x 36" Ovalish 80,000 Litre Vinyl IGP. 1.5HP Hayward Super II pump. 300 Pound Sand Filter. Summit Sum5 Heat Pump, Goldline Controls Aqua Logic P4 System, T-CELL-15 SWG, Aqua Pod Remote Control.
    TF-100 Test Kit, SpeedStir Stirrer, Pool Chemist in training.

  2. #2
    Senior Member
    Join Date
    Dec 2009
    Location
    Central Massachusetts
    Posts
    2,577

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    A good shop vac with a high CFM rating will work on a pool (a Mighty Vac works well). For a pool, you need to think high air flow rather than high pressure. You can also use an air compressor if its big enough, say at least a big enough tank with a motor that can keep up. I use a craftsman pancake compressor, 6 gallon tank to blow mine with about 15 psi on the regulator.

    A sprinkler system is another animal all together. There's a reason the guys that blow them rent a compressor on a trailor. For an irrigation system, you need a lot of air, and i mean a lot. If you used a regular tank compressor, it wolud have to be really big. You need enough air to blow continuously to clear all the lines in each zone. A comprssor like the ones they pull behind a truck is what you need. There is no tank, but the motor is big enough to supply a continuous amount of air. Thats why they use those to run jack hammers. A tank would run out of air to fast. FWIW, I'm in new england and I know a lot of people who blow their own pools. I know of no one who does their own irrigation.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  3. #3
    Senior Member 4JawChuck's Avatar
    Join Date
    Jun 2010
    Location
    Winnipeg, Manitoba, Canada
    Posts
    223

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    I tried a 2HP large shop vac on mine and eventually used a compressor, worked way better and a lot faster. Plus the compressor can be charged up and dragged to the spot required without a cord, I used a tiny 5 gal oil less Campbell Hausfield compressor...so even that is plenty.

    Not to mention vaccums are designed to suck not blow and don't put out a lot of pressure in blow mode.
    55 Kilolitre in-ground 18'X36' vinyl lined kidney shape, 1HP pump, Jacuzzi 250lb sand filter, RayPak Delta T 200K BTU natural gas heater. New PoolWerks "Blue Diffusion" liner on May 26th-2011
    Avatar is my pool!

  4. #4
    Senior Member
    Join Date
    Sep 2010
    Posts
    226

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    Quote Originally Posted by bk406
    A good shop vac with a high CFM rating will work on a pool (a Mighty Vac works well). For a pool, you need to think high air flow rather than high pressure. You can also use an air compressor if its big enough, say at least a big enough tank with a motor that can keep up. I use a craftsman pancake compressor, 6 gallon tank to blow mine with about 15 psi on the regulator.

    A sprinkler system is another animal all together. There's a reason the guys that blow them rent a compressor on a trailor. For an irrigation system, you need a lot of air, and i mean a lot. If you used a regular tank compressor, it wolud have to be really big. You need enough air to blow continuously to clear all the lines in each zone. A comprssor like the ones they pull behind a truck is what you need. There is no tank, but the motor is big enough to supply a continuous amount of air. Thats why they use those to run jack hammers. A tank would run out of air to fast. FWIW, I'm in new england and I know a lot of people who blow their own pools. I know of no one who does their own irrigation.
    You are right, the irrigation company does come with one of those trucks that looks like one huge compressor at the back.

    When I contacted the irrigation company about doing it myself, they had this to say: "You can use a small compressor but it will take 45-60 minutes to do . The size is not that important it is the volume of air".

    Given that, can I purchase something that will let me do both, from your message I get the impression that people just don't normally do it by themselves, I'm willing to except that too if I have to.

    As for the Shop Vac, when you say high CFM, how high do you mean, I'm not well versed with Shopvacs at all, but it would be nice to have one I could also use to clean my garage and car with.

    The last person that closed my pool had a nifty one, it actually looked like a large dustbuster and it was a portable hand held, any idea what that was? The only thing I fear is having the shopvac fall in the pool while it is plugged in, I don't know if they make a combo type unit that is hand held like that pool closer had and at the same time can be used to do clean up jobs in the garage and car?
    18' x 36" Ovalish 80,000 Litre Vinyl IGP. 1.5HP Hayward Super II pump. 300 Pound Sand Filter. Summit Sum5 Heat Pump, Goldline Controls Aqua Logic P4 System, T-CELL-15 SWG, Aqua Pod Remote Control.
    TF-100 Test Kit, SpeedStir Stirrer, Pool Chemist in training.

  5. #5
    Senior Member
    Join Date
    Dec 2009
    Location
    Central Massachusetts
    Posts
    2,577

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    CFM= cubic feet per minute. If you use some sort of shop vac, one that puts out around 400 CFM would be ok. Your pool guy probably had mighty vac. Was this it:

    http://www.poolcenter.com/winter_suppli ... ty_vac.htm

    You dont worry about dropping it in the pool. Look at the video on the link I put in to see how they do it.
    If you use a compressor, you blow from the equipment pad. You screw the air hose into one of the drain plags on the pump and blow the whole system from right there.

    To do a sprinkler system, you would need a larger compressor with a big tank. Like say 60 gallon, 100 gallon would be better. That will run you $1000 up to 3 grand. A compressor to blow the pool would be in the range of 60-80 bucks from Sears. Even at $1000, around here thats 10 years worth of blow-outs from my landscaper (he charges $100 a season).
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  6. #6
    Senior Member
    Join Date
    Sep 2010
    Posts
    226

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    Quote Originally Posted by bk406
    CFM= cubic feet per minute. If you use some sort of shop vac, one that puts out around 400 CFM would be ok. Your pool guy probably had mighty vac. Was this it:

    http://www.poolcenter.com/winter_suppli ... ty_vac.htm

    You dont worry about dropping it in the pool. Look at the video on the link I put in to see how they do it.
    If you use a compressor, you blow from the equipment pad. You screw the air hose into one of the drain plags on the pump and blow the whole system from right there.

    To do a sprinkler system, you would need a larger compressor with a big tank. Like say 60 gallon, 100 gallon would be better. That will run you $1000 up to 3 grand. A compressor to blow the pool would be in the range of 60-80 bucks from Sears. Even at $1000, around here thats 10 years worth of blow-outs from my landscaper (he charges $100 a season).
    OK all valid points on the compressor and irrigation system, the company I use also charges around $100, I'll put that to rest and just keep having them close it.

    I'll look at Shopvac in the 400CFM+ range.

    I looked at the link you sent and it is not what the guy used, his was portable, compact and hand held.
    18' x 36" Ovalish 80,000 Litre Vinyl IGP. 1.5HP Hayward Super II pump. 300 Pound Sand Filter. Summit Sum5 Heat Pump, Goldline Controls Aqua Logic P4 System, T-CELL-15 SWG, Aqua Pod Remote Control.
    TF-100 Test Kit, SpeedStir Stirrer, Pool Chemist in training.

  7. #7
    Senior Member
    Join Date
    Dec 2009
    Location
    Central Massachusetts
    Posts
    2,577

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    Quote Originally Posted by Rockstead
    I looked at the link you sent and it is not what the guy used, his was portable, compact and hand held.
    It may not be the same brand, but look again. That mi t vac is portable. There's a handle right on top.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  8. #8
    Senior Member
    Join Date
    Sep 2010
    Posts
    226

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    I'm looking at the ShopVac website right now but I don't see any listing for CFM, I'm looking at all the models they have available with a blower and there are so many with Horsepower ranging from 0-6+ and different tank sizes.

    Is there one people generally recommend? a Mighty Vac looks cool but I would like it to double as an actual Vacuum for the garage and car.
    18' x 36" Ovalish 80,000 Litre Vinyl IGP. 1.5HP Hayward Super II pump. 300 Pound Sand Filter. Summit Sum5 Heat Pump, Goldline Controls Aqua Logic P4 System, T-CELL-15 SWG, Aqua Pod Remote Control.
    TF-100 Test Kit, SpeedStir Stirrer, Pool Chemist in training.

  9. #9
    Senior Member In the Industry

    Join Date
    Jul 2010
    Location
    Ashford, CT
    Posts
    196

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    I tried both a 6hp shop vac and compressor with mixed results. Then I remembered that I had another 2HP spa blower that I got off ebay for $50. Hooked that up and attached a couple different fittings and blew out all great.

    Now im looking to integrate that blower into my plumbing this spring so I can blow all out without unhooking much. Or will just use it as my go-to closer.

    B
    25k 20x40 Gunite w/ integrated Spa & Caribbean Blue Plaster, Curved Bluestone Coping, Deck Jets
    Pentair Easy Touch/Wireless, Sta-Rite Intellipro SRVS Pump, Intellibrite Lights, & Pentair IC40 Cell, Sta-Rite 450sf Cartridge filter
    Heated from Central Boiler - Outdoor Wood Furnace & Triangle Tube Max Heat Exchanger
    ColorQ Pro
    TF-100

  10. #10
    Senior Member
    Join Date
    Sep 2010
    Posts
    226

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    Still not sure on this one, can anyone recommend a Shopvac that will work with 100% certainty and double as a Shopvac I can use for around the house and car.
    18' x 36" Ovalish 80,000 Litre Vinyl IGP. 1.5HP Hayward Super II pump. 300 Pound Sand Filter. Summit Sum5 Heat Pump, Goldline Controls Aqua Logic P4 System, T-CELL-15 SWG, Aqua Pod Remote Control.
    TF-100 Test Kit, SpeedStir Stirrer, Pool Chemist in training.

  11. #11
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    20,973

    Re: ShopVac Vs Compressor for Pool/Irrigation system closing

    That's going to be hard to do. The one specification that you need, to determine with certainty that it'll work, is outlet pressure and no shop vac mfg's that I know of list that spec. In order to blow water out of a line you have to know the head of the water in the line and buy something to overcome that.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 1.5hp Dynamo pump. 24" Pentair Sand Dollar Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit
    You can stop SLAMing your pool when you pass the OCLT (You lose 1ppm or less FC overnight, & You have .5ppm CC's or less) & your water is clear.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •