Simple Green Pro HD Heavy Duty Cleaner Concentrate 1 Gallon Bottle – Outdoor Pressure Wash Soap for Siding, Patios, and Decks
Simple Green Pro HD Heavy Duty Cleaner Concentrate 1 Gallon Bottle – Outdoor Pressure Wash Soap for Siding, Patios, and Decks
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Why you'll love it
- One concentrated gallon replaces multiple specialty cleaners, saving money and storage space
- Non-corrosive formula is safe on metal, aluminum, and other sensitive surfaces without damage
- Biodegradable and unscented, making it suitable for food-service and environmentally conscious settings
- Professional-grade strength tackles tough grease and grime in a single pass, reducing labor time
- Versatile enough for floors, walls, appliances, RVs, and engines — eliminating the need for separate products
Perfect for
- Degreasing automotive engines, parts, and exteriors
- Pressure washing siding, driveways, and outdoor surfaces
- Deep cleaning commercial kitchen floors and equipment
- Walls, floors, and surface prep during renovation or contractor work
- Parts washing and ultrasonic cleaning of industrial components
Simple Green Pro HD Heavy-Duty Cleaner is a professional grade cleaner and degreaser that breaks down tough grease, eliminates grime, and removes stains on a wide variety of surfaces including engines, car exteriors, machinery, floors, walls, and more. It is non-corrosive to metals, non-degrading to plastics, and clean rinsing.
Pro HD is heavy-duty enough to maintain landscaping equipment and heavy machinery, but gentle enough for use on stove tops, ovens, grills, range hoods, vents, BBQs, refrigerators, and more.
The cost-effective concentrate can be custom diluted for specific cleaning jobs, and can be used in pressure washers, carpet cleaners, floor scrubbers, ultrasonics, dip tanks, and other cleaning equipment. The water-based cleaner provides a safer alternative to solvents and other harsh cleaning chemicals without sacrificing performance.
Small changes in product size & weight lead to lower carbon emissions.
We created Compact by Design to identify products that, while they may not always look very different, have a more efficient design. With the removal of excess air and water, products require less packaging and become more efficient to ship. At scale, these small differences in product size and weight lead to significant carbon emission reductions.
Product Information
Simple Green Pro HD is a PROP 65 product, non-corrosive, professional grade product
Developed for multi-purpose contractor applications including use on floors, walls, industrial equipment, appliances; automotive or recreational vehicle cleaning and degreasing
Also including commercial kitchens and baths and for pressure washing, parts washing, ultrasonic cleaning and more
It quickly eliminates tough grease and grime, removes stains, and is safe on metal surfaces
Simple Green Pro HD is your one-stop cleaner and degreaser
Item Form: Liquid
Scent: Unscented
Specific Uses For Product: Automotive Exterior, Carpet, Engine, Floor, Industrial Machinery
Surface Recommendation: Carpet, Metal, Plastic
Special Features: Concentrated
Compatible Refills: simple_green_pro_hd_heavy_duty_cleaner
Material Features: Biodegradable
Item Volume: 1 gallons
Number of Items: 1
Item Weight: 9.4 pounds
Size: 128 Fl Oz (Pack of 1)
Global Trade Identification Number: 00043318134210
Part Number: 2110000413421
Included Components: Simple Green Pro HD Heavy Duty Cleaner Concentrate 1 Gallon Bottle
Frequently Asked Questions
Will it work in my pressure washer to clean siding, concrete, and outdoor furniture?
Yes. Simple Green Pro HD is fully compatible with pressure washer injection systems and is widely used by homeowners and pros for cleaning siding, driveways, patios, decks, and outdoor furniture. The concentrate dilutes easily and rinses clean, leaving outdoor surfaces looking freshly washed without residue.
Can I use it safely on my RV or boat exterior without damaging the finish?
The non-corrosive formula is safe on the gel coat, paint, aluminum trim, and decals typical of RVs and boats when used as directed. It is strong enough to cut road grime, bug residue, and waterline film, but gentle enough that detailers trust it on high-end finishes.
Will it actually remove oil stains from my concrete driveway and garage floor?
Oil and grease penetration is one of the standout uses for this concentrate. Applied at a stronger dilution, scrubbed in, and rinsed, it pulls petroleum staining out of concrete far better than most household detergents, which is why contractors and homeowners keep a gallon specifically for driveway cleanup.
Is it safe to use on my patio, deck, and outdoor kitchen without harming plants or grass?
The biodegradable formula is designed to break down after rinsing, and many homeowners use it routinely on patios, grills, and outdoor kitchens. As with any cleaner, rinsing thoroughly and avoiding direct spray on sensitive plantings is recommended, but it is a much more yard-friendly option than solvent degreasers.
Does it hold up in cold or hot weather outdoor cleaning projects?
The water-based concentrate handles a wide range of outdoor conditions, from cool spring wash days to hot summer driveway projects. For best results, store the bottle at moderate temperatures and apply to surfaces that are not freezing, but in normal outdoor use across the seasons it performs consistently.
Is this a good all-in-one product to take camping for gear, coolers, and outdoor equipment?
For campers, RV owners, and overlanders, a small decanted bottle of Simple Green Pro HD is a versatile camp companion. It handles coolers, camp stoves, plastic totes, awnings, and even dirty bike frames, so you can pack one cleaner instead of half a dozen specialty bottles for the trip.
Can I use it to clean outdoor furniture, grills, and patio umbrellas in one go?
Yes. The same concentrate that lifts grease off a grill hood can clean plastic, vinyl, and fabric patio furniture at a lighter dilution. That makes spring and fall patio refreshes much faster because you are not switching products every time you move from the grill to the cushions to the umbrella.
Will it help me prep my house exterior for painting or staining?
Exterior prep is one of the highest-value outdoor uses. Simple Green Pro HD removes mildew, dirt, and chalky residue from siding, fences, and decks so primer and stain can bond properly. Painters and homeowners routinely use it as the wash step before repainting a house or refinishing a deck.
How does it compare to dedicated concrete or deck cleaners sold at big box stores?
Dedicated concrete and deck cleaners are usually single-purpose and often more expensive per ounce. Simple Green Pro HD replaces those bottles for most outdoor jobs while also handling engines, tools, and indoor surfaces, which is why a single gallon covers everything from driveway stains to patio furniture.
Is it strong enough for tough outdoor jobs like cleaning a neglected fence or brick walkway?
For neglected fences, brick walkways, and stone paths, a stronger dilution and a little dwell time is usually all it takes to lift years of grime, mildew, and pollution staining. Many homeowners are surprised that one concentrate handles jobs they would otherwise hire out or attack with multiple products.
I am worried about runoff harming my lawn or garden when I wash the driveway. Is it actually outdoor-safe?
The biodegradable, non-corrosive formula is much gentler on landscaping than solvent degreasers or acid concrete cleaners, and it rinses away with normal water flow. Minimizing overspray and watering nearby plants after rinsing are good practices, but for a driveway wash it is a noticeably more yard-friendly choice.
How do I dilute Simple Green Pro HD for different cleaning jobs?
Dilution depends on the job. For heavy degreasing of engines, parts, and shop equipment, use the concentrate or a strong dilution such as 1:1 to 1:10 with water. For pressure washer exterior work, 1:10 to 1:20 is typical. For routine floor and wall cleaning, light dilution around 1:30 works well. Always start with the recommended ratio on the label and adjust up for tougher soils and down for lighter messes.
Can I use it in a pressure washer, parts washer, and ultrasonic cleaner?
Yes. Simple Green Pro HD is designed to be compatible with pressure washer injection systems, recirculating parts washers, and ultrasonic cleaning tanks. For ultrasonic use, follow the equipment manufacturer guidance on temperature and dilution, and rinse parts after cleaning to remove any residue before reassembly.
What is the best way to apply it for greasy engine bays and automotive parts?
Spray or brush the diluted concentrate onto a cool engine or part, let it dwell for a minute or two to break down grease, agitate with a brush on heavy buildup, then rinse thoroughly with water or a pressure washer. For heavily carbon-fouled parts, use a stronger dilution and repeat as needed.
Is it safe to use on carpet, upholstery, and other interior fabrics?
It can be used on many interior fabrics at a light dilution for spot treatment of grease and oil stains. Always test in an inconspicuous area first, avoid soaking the material, and blot or extract rather than scrubbing aggressively. For delicate or natural fiber fabrics, consult the manufacturer care guide first.
Will it damage aluminum, chrome, stainless steel, or painted surfaces?
The formula is non-corrosive and is engineered to be safe on aluminum, chrome, stainless steel, and cured painted surfaces when used as directed. Avoid letting the concentrate dry on hot surfaces in direct sun, and rinse thoroughly after the dwell time. For unknown coatings, always spot test first.
What comes in the box when I order the 1-gallon version, and what do I need to buy separately?
You receive one 1-gallon bottle of concentrated Simple Green Pro HD Heavy Duty Cleaner. The bottle has a standard cap that you can pour from, but for the best experience you may want to pick up a shop pump, a labeled spray bottle, or a dilution jug, none of which are included.
How should I store the concentrate to keep it effective and safe?
Store the bottle sealed in a cool, dry area out of direct sunlight, and keep it out of reach of children and pets. Avoid letting the product freeze or sit in extreme heat for long periods, and keep the cap tightly closed to prevent evaporation, which can change the dilution strength.
Is it safe to use around septic systems and standard drain plumbing?
The biodegradable, water-based formula is generally safe for septic systems and standard plumbing when used at recommended dilutions and flushed with plenty of water. Avoid pouring undiluted concentrate directly into a septic system in large volumes, and follow any local guidelines for commercial waste disposal.
What is the difference between a concentrated degreaser like this and a ready-to-use all-purpose cleaner?
A concentrated degreaser is a professional-strength product you dilute yourself to match the job, which gives you far more cleaning power per ounce and much better cost control. A ready-to-use all-purpose cleaner is pre-diluted for light everyday messes and is convenient but more expensive per use and weaker on heavy grease, oil, and carbon.
