Iranian carpets — what the rest of the world calls Persian rugs — are among the most technically complex textiles ever produced. Tabriz, Isfahan, Kashan, Heriz, Qashqai, Sarouk. Each origin city has its own weaving tradition, its own dye palette, its own fiber and foundation preferences.
What they share is this: none of them can be cleaned with hot-water extraction. The method used by most carpet cleaning services — high temperature, alkaline chemistry, mechanical agitation — causes permanent damage to Iranian carpets. Every one of them.
Iranian carpet cleaning done correctly means cold-water hand washing, pH-matched chemistry, individual dye testing before any water touches the rug, and controlled flat drying. This is the museum conservation standard. It is also the only standard that preserves the rug.
What makes Iranian carpets different from other rugs
Three things distinguish Iranian hand-knotted carpets from machine-made and synthetic rugs — and all three affect how they must be cleaned.
Natural dyes. Most antique and semi-antique Iranian carpets use vegetable and mineral dyes — madder root for reds, indigo for blues, pomegranate rind for golds, oak galls for blacks and browns. These dyes are fixed to the wool with metallic mordants: alum, iron, copper, chrome. The mordant bond is what holds the color in the fiber, and it is pH-sensitive.
Alkaline chemistry — pH 9 to 12, standard in most carpet cleaning products — disrupts that bond. The dye releases. Colors bleed into adjacent areas. Once set, this is permanent or extremely expensive to correct.
Wool fiber quality. Iranian rug wool, particularly kork wool from the underbelly of the lamb, has a natural lanolin content that gives it resilience and sheen. Heat above 100°F with mechanical agitation felts this wool: the cuticle scales open, fibers interlock, and the pile mats permanently. This is not reversible.
Cotton foundation. Most Iranian carpets have a cotton warp and weft foundation. Cotton saturates easily and dries slowly. A damp cotton foundation in a warm environment is a mold risk. It also causes dye migration — colors from the wool pile bleeding into the cotton and depositing there as the rug dries.
The correct method for Iranian carpet cleaning
Conservation-grade Iranian carpet cleaning follows the same protocol used for museum textile collections.
Step 1 — Condition documentation. Every Iranian carpet is photographed before any treatment begins. The condition record notes existing damage, wear patterns, dye stability, and any areas of concern.
Step 2 — Fiber and dye testing. Before water touches the rug, every color field is spot-tested for dye stability at the pH we intend to use. A red field in a Kashan responds differently than a red field in a Tabriz — same color, different dye chemistry, different behavior under washing.
Step 3 — Dry dusting. Embedded grit is removed before the rug gets wet. Grit in wet wool fibers acts as an abrasive — it accelerates fiber damage during washing. Dry dusting alone takes 30 to 45 minutes on a medium-sized Iranian carpet.
Step 4 — Hand washing. Cold water — below 70°F. Non-ionic detergents at pH 5 to 6, matching the rug’s native chemistry. Gentle manual washing with soft brushes in the pile direction. Never scrubbed. Never wrung. Multiple light passes with thorough rinsing between each.
Step 5 — Controlled flat drying. The rug is dried completely flat for 24 to 48 hours. Not hung. Not in direct sunlight. Not with forced air heat. Hanging a wet Iranian carpet distorts the foundation as gravity pulls unevenly through relaxed fibers.
Step 6 — Pile grooming and inspection. When dry, the pile is combed in the pile direction. A final inspection documents the post-cleaning condition before the rug returns to the client. This is the Iranian carpet cleaning service we perform on every hand-knotted rug, regardless of origin.
Iranian carpet cleaning in Chicago — what to look for
Chicago has several rug cleaning services but very few that specifically understand Iranian and Persian carpet construction. There are four questions to ask any service before booking.
“What temperature is your wash water?” The answer must be cold or cool. Not warm. Not hot. Any service that cannot answer this specifically is cleaning carpets, not Iranian rugs.
“Do you dye-test before washing?” The answer must be yes — every color, before every wash. Not “we use gentle products.” Not “it’s fine for most rugs.” Iranian carpets with natural dyes require individual color testing.
“How do you dry the rugs?” The answer must be flat, 24 to 48 hours. Not “we extract most of the water.” Not “it dries quickly.” Foundation moisture causes the damage that appears months later.
“Are you IICRC certified?” IICRC certification does not guarantee conservation-grade methods but it establishes a baseline of professional accountability.
At Ahmadi Rug in Skokie, we provide free insured pickup from anywhere in Chicago and the North Shore. Iranian carpet cleaning starts at $5 per square foot for hand-knotted wool pieces. Written estimates within 2 hours.
The most common Iranian carpet types and their cleaning needs
Tabriz. Tabriz carpets from northwest Iran are among the most precisely woven Iranian rugs — knot counts ranging from 100 to 400 KPSI. Fine pile means more fiber surface area per square inch, which means more dye exposure during washing. Tabriz pieces require the gentlest wash passes and the most careful dye testing.
Kashan. Kashan rugs from central Iran typically use a rich red field (madder-dyed) with dark blue borders (indigo). These two dyes behave very differently — madder is more stable at acidic pH, indigo can bleed at the wrong temperature. Each color is tested separately before washing begins.
Heriz. Heriz rugs come from the same northwest region as Tabriz but a distinct village weaving tradition. Coarser knotting, bolder geometric designs, more durable wool. Heriz pieces tolerate slightly more vigorous washing than fine Tabriz pieces but still require cold water and pH-matched chemistry.
Qashqai and tribal pieces. Qashqai rugs from the nomadic tribes of Fars Province typically use wool-on-wool construction — no cotton foundation. This makes them more forgiving of moisture, but the natural dyes are often more varied and require case-by-case testing.
Isfahan and Sarouk. Isfahan and Sarouk pieces often have higher silk content in the pile highlights. Silk requires even lower pH chemistry than wool — typically pH 4 to 5. A rug with silk highlights cannot be washed at the same pH as a pure wool piece.
How much does Iranian carpet cleaning cost in Chicago?
Iranian carpet cleaning is priced by fiber type and size. Hand-knotted Iranian wool carpets are $5.00 per square foot. Hand-knotted Iranian silk or wool-silk blends are $7.00 per square foot. Minimum charge is $95.
An 8×10 Iranian wool carpet (80 square feet) is $400. A 9×12 Iranian wool carpet (108 square feet) is $540. These prices include free insured pickup and delivery anywhere in Chicago and the North Shore.
All estimates are written and firm before any work begins. Bobby Ahmadi responds to all estimate requests within 2 hours.
The price difference between Iranian carpet cleaning ($5 per sqft) and standard carpet cleaning ($3 per sqft for machine-made) reflects the additional time required for dye testing, pH-matched chemistry, and extended flat drying. For a complete breakdown of factors and price ranges, see our rug cleaning cost guide.
Free pickup from Chicago and the North Shore
We provide free insured pickup for Iranian carpet cleaning from anywhere in Chicago and the North Shore — Lincoln Park, Gold Coast, Evanston, Wilmette, Winnetka, Glencoe, Highland Park, Lake Forest, Northbrook, Glenview, and surrounding areas.
Every Iranian carpet is photographed before it leaves your home. Bobby Ahmadi coordinates all pickups personally and typically schedules within 48 hours of estimate approval.
Send us photos of your Iranian carpet and receive a free estimate within 2 hours.